Melon. The weather in Guangzhou

First look at pinyin and write words. (8 points)

Kang Kaizu Naoshan Yan Shuo Shang Jun Xin Yue Mu

( )( )( )( )( )( )( )( )( )( )( )( )

Bolanzhuang expands Ding Jie Tie Xuan Yajuebi.

( )( )( )( )( )( )( )( )( )( )( )( )

Choose the correct pronunciation (check the correct pronunciation). (5 points)

Knees (xi Qi) are all exposed (Lulu) (Chen Cheng).

Move (Tan Dan), annihilate (Qian Jian), dislike (Wu E) and call (Hao Hao).

Zhao Zuo, Zhang Zhang, strong.

Three. Complete the following words. (5 points)

() Hands on the sidelines, each holding his own opinion () Eliminating disasters () Being listless ()

Young () ridiculous concentric () force () to choose soldiers () and then take charge () to Zhao.

Fill in the blanks in the dictionary. (3 points)

1, the word "boat" is a word with _ _ _ structure, and the stroke order is _ _ _

2. Look up the capital letter _ _ "dang" with the radical _ _, and the name of the seventh painting is _ _ _ _ _ _ _; In the dictionary, the word "dang" has four meanings (1) and is unrestrained; (2) removing and polishing; (3) Walking around doing nothing; (4) shake. In the word "cleaning", you should choose _ _ _ to explain.

5. Choose words to fill in the blanks. (6 points)

Battle, campaign, war weather and climate

Not only … but … either … or …

The reason ... is because ... although ... but ...

1, the people of the world have won a great victory against fascism ().

2. In the battle of () taking the "39 1" highland, he died gloriously.

It gets hotter every day in June.

4, bees () can travel far, () the ability to travel far is not as good as birds.

He () achieved such excellent results and () worked hard.

6. On Sunday, I read books and listen to the radio.

Sixth, comprehensive error correction. (5 points)

The scenery here is very beautiful. There is a big pond in front of the village. The water in the pond is clear and quiet, with blue sky and white clouds falling.

Reflected in the water, the lotus in the pond is dotted; Tits, thrushes and birds are singing to each other in the bamboo forest.

Crispy and sweet, behind the village is a green bamboo forest, and everyone who has been here says it really looks like a couple.

Beautiful landscape painting.

Seven, disorderly sentences. (3 points)

There is a small bridge over the river.

There are mountains behind Moon Bay, and pear trees and apple trees grow on the hillside.

Flocks of fish swim around in the river, and the clear river reflects the green hills, trees and bridges.

My hometown is in Moon Bay.

Many peach trees are planted on the river bank. In spring, the trees are full of peach blossoms, which look like a burning morning glow from a distance.

There is a crescent river in front of the village, which flows slowly around the village.

Fill in the blanks according to the text. (10)

1. The poem "Long March" points out that the central poem is "_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ (Long March)

2、"________,______。" Vividly wrote the scenery on the river at sunset. ("Mujiangyin")

Read the article and then do the questions.

< 1 > Moonlight Music (excerpt)

The shoemaker listened quietly. He seems to face the sea, and the moon rises from where the water meets the sky. On the surface of the microwave, the silver light scattered instantly. The moon rose higher and higher, passing through a wisp of gauze-like Wei Yun. Suddenly, a strong wind blew on the sea and rolled up huge waves. The waves sparkled in the moonlight and rushed to the shore one by one ... The shoemaker looked at her sister, and the moonlight shone on her quiet face, her eyes wide open. She seemed to see something she had never seen before, the rough sea in the moonlight.

1. Add some words to the following words and choose the correct pronunciation. (1.5 points)

Microwave (Lin Lin), Thunder (Nulu) and Gua Tian.

2. Use "_ _" to draw the real thing in the text, and use "~ ~" to draw the content of association. (4 points)

3. The shoemaker's first association depicts three pictures, namely (1.5).

( 1)_________ (2)_____(3)______

4. Why does the blind girl "seem" to see something she has never seen before? (3 points)

< 2 > _ _ _ _ _ _

Taiwan Province Island is beautiful and rich, and it is the treasure island of the motherland.

The western plain of Taiwan Province Island is rich in rice and sugarcane, which are called "rice barn" and "sugar barn". Taiwan Province Island has fresh fruits all year round, with bananas and pineapples the most, and has always enjoyed the reputation of "the land of fruits".

Taiwan Province Island is lush with trees. There are dense coniferous forests in mountainous areas, accounting for 55% of the total area. It is one of the important timber producing areas in China, and is known as the "green treasure house".

Taiwan Province Island is rich in forest resources, as well as many minerals and aquatic products. There are many kinds of minerals such as oil and gold 1 10 buried underground. The vast ocean around is rich in aquatic products, with more than 500 kinds of fish, such as sharks and eels.

The central and eastern parts of Taiwan Province Island are mountainous areas. The highest mountain is nearly 4000 meters above sea level, which is the highest mountain in eastern China. In winter, the snow on the top of the mountain is dazzling and looks like jade from a distance, so it is called Yushan.

Sun Moon Lake is a natural lake on the island. There are islands in the lake, which divide the lake into Sun Moon Lake. The lake is as clear and smooth as a mirror. The shore is green with grass and flowers in full bloom. Surrounded by mountains, lush forests and mountains and rivers set each other off, attracting many Chinese and foreign tourists to visit and become a famous tourist attraction.

Taiwan Province Province has been a part of our sacred territory since ancient times, and the people of Taiwan Province Province are our own flesh and blood. At present, people on both sides of the Taiwan Province Strait are eager for an early reunion and the peaceful reunification of the country.

1, add appropriate topics to the article. ( 1)

2. In the essay, it is especially pointed out that Taiwan Province Island is rich in natural section _ _ _ _ _ _ _ _ _; Describe the beautiful natural section of Taiwan Province Province is the first _ _ _ _ _. (5 points)

3. In the essays, people praised the rich reputation of Taiwan Province Island as "Micang", _ _ _ _ _ _ _ _ _ _ _(3 points).

4. Summarize the general idea of the sixth paragraph (3 points) _ _ _ _ _ _ _ _

5. The transition sentence is underlined with "~ ~", and the central sentence of the article is underlined with "_ _". (3 points)

X. composition: (30 points)

Title: Self-determination

First, the accumulation and use of language.

1. Read the words added in the following words: (2 points)

Bone _ _ _ _ _ _ _ Bone Static _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

2. The following items with typos are () (2 points)

A. The seas run dry and the rocks crumble, and that kind of panic is still fresh in my mind.

B. I learned from a painful experience and suddenly realized that the water was shining.

C. It's shocking to teach people to go along with wild hazelnuts.

D. stumbling, a blessing in disguise, how to know that it is not a blessing, and cherish glory more than a territory.

3. The following words are incorrectly interpreted () (2 points)

A. Milestones: A metaphor for a major event that can be used as a symbol in the historical development process.

D. within sight: refers to distant things that are within sight and can be seen.

C. omen: a sign revealed in advance.

D. Creator: People think that God created everything, so they call God "Creator".

4. Find out which of the following idioms is used correctly () (2 points)

A. everyone agrees with the teacher's suggestion.

B.they are so close that they are inseparable.

C. Mother takes good care of her sick grandmother, and she takes good care of her.

D. He usually works hard, and he is self-righteous for getting good grades this time.

5. According to the semantic requirements of the sentence, fill the following four words in the appropriate spaces: (2 points)

Retreat, panic, despair, pride

(1) Of course I won a complete victory, so _ _ _ _ _ went out and left him _ _ _ _ standing in the hut.

(2) It is _ _ _ _ to stand up, and it is _ _ _ _ to lose color.

6. One of the following sentences is () (2 points)

A. Every college student in the Central Academy of Arts and Crafts hopes to be an excellent artist in the future.

B, language fluency is one of the important criteria to measure the quality of a composition.

C, the more accurately people grasp the basic particles that make up matter, the more they can recognize the essence of matter, so as to understand nature and make it serve mankind.

To avoid making mistakes again, we must study hard.

7. One of the following statements is incorrect () (2 points)

Fable is a kind of literary genre and a story with fable or obvious educational significance. Its structure is mostly short.

Story plot. Heroes can be people, animals or inanimate objects.

B Guo Moruo's two poems depict a fascinating fairyland in the sky and express the author's hope to face the darkness of reality.

Looking for a better society in the sky.

C. "Nu Wa made man" is just a fairy tale, which explains how human beings came into being before they mastered scientific knowledge.

D in the article "to the child and his shadow", there is a clear spring of love flowing between the lines, which makes us deeply moved.

8. One of the following statements is not completely consistent with the original text () (2 points)

A. If you don't believe me, please look at that meteor. They are walking with lanterns.

B. gently shake the parked paddle. The autumn sports meeting is held on fishing boats.

C. is there a saying that you can go for a lifetime?

D. Brother and daughter said, "If catkins are not caused by the wind."

9. Point out the interpretation methods of the following sentences (6 points)

The diameter of the earth is only 3.7 times that of the moon. ( )( )

(2) If the moon is not the wife of the earth, it is the sister of the earth or the daughter of the earth. ( )

People often say: "the east rainbow thunders and the west rainbow rains." If the rainbow is in the east, it will thunder and not rain; The rainbow is in the west and there will be heavy rain. ( )

(4) Cirrus clouds are constantly floating, sometimes like a white feather, sometimes like a white silk thread. ( )

(5) The Yongding River is very violent when it floods, and the riverbanks on both sides are often washed away, but the Lugou Bridge has never had an accident, which shows that it is strong. ( )

10. Fill in the blanks with literary knowledge (9 points)

The author of Green Fruit is an entomologist in China and has a book.

The author of Mountain City is a Korean writer. This article is selected from a book.

Naoko suspects that the neighborhood is selected from. Han Fei, a famous economist. "A wise son suspects his neighbor" tells people that "a blessing in disguise is a blessing in disguise" has become an idiom.

(4) Tagore is a (national) famous writer, who won the literary prize.

⑤ The author of Silent Night Thinking is famous, and what is the representative poem?

1 1. Write another sentence on the horizontal line below, which is consistent with the underlined sentence (3 points).

I love this colorful world. I love red, because it is the color of blood, symbolizing loyalty and enthusiasm;

..... colorful, this is the life in our eyes.

12. Pay attention to the identity and object when you speak, so as to produce good results. Answer the following questions according to the context provided below. (2 points)

Wang Chang's academic performance has always been good, but since this year, he has been fascinated by video games because of the influence of others. He usually chats games with his classmates, so he has less investment in learning, and sometimes thinks about the content of the game in class. In the final exam, my grades dropped greatly. At this time, he suddenly woke up, feeling very sad, moping at home, and sometimes losing his temper. Faced with this situation, Wang Chang's mother and classmates are ready to enlighten him. How can we inspire them to produce results? Please write a few enlightening words for your mother and classmates respectively.

Mom said:

. ( 1)

This classmate said:

. ( 1)

Second, classical Chinese reading

(1) Read Chen Taiqiu and Friendship Period and complete the following questions.

Chen Taiqiu met his friend at noon. After noon, his friend didn't arrive. Chen Taiqiu didn't wait for him to leave. After Chen Taiqiu left, his friend arrived. Fiona Fang is seven years old and playing outside the door. Yuan Kewen

Fang: "Is Zunjun there?" Hui Yuan replied, "My father waited for you for a long time, and you left before you arrived." The friend was angry: "No humanity! "Walk with people, walk with people." Fiona Fang said?

"Jun and Jia Jun period between Japan and China. If Japan and China do not arrive, there will be no letter; It is impolite to scold your father. " Friends were ashamed and got off to lead them, but Fiona Fang couldn't start.

Gu.

13. When reading the following sentences, underline the pause with "/". ( 1)

Fiona Fang entered the door and ignored it.

14. Words added in explanatory sentences (2 points)

(1) Chen Taiqiu and friends. () ② Is Zunjun there ()

(3) phase committee and go. () (4) Fiona Fang began to ignore ()

Translate the following sentences.

If you don't pass the customs in the middle, you will go to Qiu, even after you go. ( 1)

16. How to understand "a friend is ashamed, get off and lead him"? ( 1)

17. Is it impolite to "ignore Fiona Fang's entry" at the end of the article? Talk about your opinion. ( 1)

18. What does this story tell us about an important quality of being a man? Does this still make sense in modern society? (2 points)

(2) Read "Singing Snow" and complete 20-22 questions (6 points)

Xie An held a family reunion on a cold snowy day, explaining poetry with his son and nephew. Soon, it snowed heavily, and the guardian said happily, "What kind of snow is this?" ? "Brother and son Hu Er.

Said: "The air difference of salt spraying can be simulated." The daughter in my ear said, "If the catkins were not due to the wind." Imperial guards laughed. That is, Big Brother doesn't have a game console, and General Zuo Wang Bang.

Wife also.

19. Explain the added words. (4 points)

(1) Xie Taifu's collection of cold and snowy days () (2) can simulate the air difference of salt spraying. ( )

(3) It snowed suddenly. () (4) Tell the children about the significance of the paper. ( )

20. Translate the following sentences. (2 points)

(1) What is Lian Xue?

(2) If the catkins are not caused by the wind.

2 1. Apart from the two metaphors in the article, what do you think of "what is snow like"? As long as we pay attention to the shape, color and falling characteristics of snowflakes, we can give full play to our imagination and find many beautiful metaphors to describe falling snowflakes. (2 points)

Third, modern reading.

(1) Yin

Why didn't the earliest fish have a chin?

Why did the earliest birds have mouths and teeth?

Why didn't the first fish land on its legs?

Why didn't the earliest trees bloom?

Will the world that has passed away for thousands of years reappear?

Can a stone that has been sleeping for hundreds of millions of years talk?

Fossils have just awakened underground,

Please tell me those absurd myths one by one.

You remind me of ancient times,

Draw a picture of biological evolution;

You deny the existence of the creator,

Cold bones answer ordinary truth.

Although the body has rotted and disappeared,

The soul of life, fire, dives underground,

The black body is wrapped in the information of life,

Leave a precious password for history.

Time has carved wrinkles on your face,

It's like carefully drawing a life file,

The sea dries up, the rocks rot, the sun rotates and the stars move. ...

The ship of life has been marching from ancient times to modern times.

Recovered dinosaurs and mammoths seem to roar,

How lush and elegant the ancient trees are,

Ah, your amazing nature,

An outstanding magician and an outstanding sculptor!

The world that has passed away for thousands of years reappears,

The stone that has been sleeping for hundreds of millions of years has spoken.

Fossils have just awakened underground,

What a fascinating and surprising story you told!

22. Fossils reappear. What kind of world has passed away for thousands of years? (2 points)

23. Why do you say "the stone that has been sleeping for hundreds of millions of years has spoken"? (2 points)

24. What do you mean, "The seas run dry and the rocks crumble, the sun turns and the stars move …"? Find the right sentences from the poem. (2 points)

25. What does "leaving precious passwords for history" mean? (2 points)

26. What is the relationship between the second section and the last section? Where is this written? (2 points)

(2)

I walked slowly on the road alone. The moon came out, so cold that I couldn't help shivering. There is not a sound on the road.

No. Suddenly, I heard someone calling my name. I turned around and saw Wan Fang running. She thrust a knife into my hand.

He said, "Take it, we are still good friends ..."

I just looked at her and cried. Oh, I feel like the saddest person in the world! Because I'm against my friends.

Regret. What a disgraceful thing I have done!

(3) But can it be all my fault?

27. Correct understanding of the moon below is () (2 points).

"I" took back the woodcarving and walked on the road. "The moon came out. It is so cold that I can't help shivering. "

A, it's getting late and it's getting cold.

B, compare the sad mood after "I" took back the woodcarving.

C, set off the mixed feelings of sadness and joy after I got the woodcarving back.

D. it shows that our friendship is as bright as the moon, although it is a little cold.

28. correctly understand "but can this be all my fault?" Yes () (2 points)

I am mainly to blame for this, but Wan Fang is also to blame.

B, because my parents didn't tell me clearly the value of antelope woodcarving before, which is their responsibility.

C, I should be blamed for going back on my word, but my parents only know that antelope is valuable, but they don't know that kindness is priceless, which forced me to do so, so I should blame my parents all the more.

Wan Fang is mainly responsible for this incident, but I am also responsible.

29. Wan Fang's sudden disappearance before and the sudden appearance of Selected Works indicate her change from "sudden disappearance" to "sudden appearance". (3 points)

30. What description methods are used in the selection? What does it reveal to us? (2 points)

(2) Read the following text selected from extracurricular activities and answer the last question.

Golden meadow

When dandelion is ripe, it is the happiest day for my brother and me. Often, we go hunting anywhere-he is in front and I am behind him.

"Xie Liao Sha!" -I solemnly called him, and as soon as he turned around, I blew dandelion fluff into his face. So he also began to spy on me, pretending to yawn and blowing dandelion fluff in my face. In this way, we always pull out these humble flowers for fun. But once, I made a new discovery.

We live in the country, and there is a meadow in front of the window. Many dandelions are in full bloom, and this grassland has turned golden yellow. How beautiful! Everyone said, "The golden grass is so beautiful!" One day, I got up early to go fishing and found that the grass was not golden, but green. Towards noon, when I got home, the whole lawn turned golden again. I began to observe, and the grass turned green again in the evening. I walked to the grass and found a dandelion. It turns out that its petals are all closed, just like our hands. When the palm is open, it is a yellow L, and when it is clenched into a fist, it will be wrapped in yellow. In the morning, the sun rose, and I saw dandelion open its palm, so the grass turned golden.

Since then, dandelion has become one of our favorite flowers. Because it sleeps with our children and gets up with us.

3 1. Please describe the main content of this article comprehensively and accurately in concise language. (2 points)

32. From the full text, what does the underlined sentence in the second paragraph do? (2 points)

33. Draw a sentence indicating brotherhood from the text. How do you feel when you read these sentences? (2 points)

34. At the end of the article, dandelion "sleeps with our children and gets up with us". What rhetorical devices are used in the sentence? Dandelion "sleep? What is the real meaning of "getting up"? (2 points)

35. Did the author always like dandelion best when he was a child? Try to find some words from the text as the basis to illustrate your point of view. (2 points)

Four, composition (20 points)

In the process of your growth, your relatives have devoted their care and love to you. Please fill in the titles of relatives (father, mother, grandfather, grandmother, grandfather, uncle, aunt, aunt, uncle, etc.). ) In the space below, then write a composition of about 500 words. Me and _ _ _ _ _ _ _ _ _

One,

1、háI mìyán qiáo 2、D 3、D 4、B

5, pride, despair and panic, 6, D 7, B 8, C.

9.① Compare figures, ② Compare figures, ③ Explain figures, ④ Compare figures, ④ Compare figures.

10, ① Fabres's insect story ② Qing Pu Songling's Strange Tales from a Lonely Studio.

(3) At the end of the Warring States Period, thinkers correctly treated other people's opinions.

(4) Indian Nobel (5) Guo Moruo, poet and scholar, goddess and starry sky

1 1, omit 12, omit

Second,

(1) 13, Fiona Fang/enter the door/ignore.

14, date: agreed no: passed the "no" Committee: stayed, abandoned the dispute: looked back.

15, after noon, my friend didn't arrive, Taiqiu left without waiting, and my friend didn't arrive until Taiqiu left.

16, friends knew they were wrong and apologized to Fiona Fang.

17, if you are wrong, you should forgive him; A seven-year-old child should not be completely blamed. (That's right)

18, honest and rational

(2) 19, ① family gathering ② almost comparable to ③ later ④ sons and nephews, referring to the young people at home.

20. ① What does this heavy snow look like ② It's not as good as style to blow catkins all over the sky.

2 1, omitted

Third,

(1) 22. The restored dinosaurs and mammoths seem to be roaring with long necks, with lush trees and elegant postures.

23. Because people can find a lot of information from fossils.

24. Refers to "the course of events and the evolution of life"; The corresponding sentence is "The ship of life has been marching from ancient times to modern times".

25. People can explore the secrets of historical development from the information revealed by fossils for people to explore.

26. The last section answers the questions raised in the second section and emphasizes the information provided by fossils.

(2) 27, B 28, C 29, psychology; Blame "me"; Understand "I"

30. The selection is mainly based on psychological description, which reveals the narrowness of adults, values talents over righteousness, does not cherish children's feelings, hurts children's psychology, and leaves a thought-provoking question.

(3) 3 1. The article describes the process of two brothers discovering the strange natural phenomenon that dandelion petals close in the evening and reopen at sunrise, and they have been very fond of dandelion since then.

32. This sentence is a turning point, which plays a connecting role between the two content levels of the full text.

The sentence that should be drawn is: "I solemnly called him, and as soon as he turned around, I blew dandelion fluff into his face." So he started spying on me, pretending to yawn and blowing dandelion fluff in my face. " These sentences describe the scenes of frolicking between brothers and show their unity and harmonious feelings.

34. personification. Dandelion sleep refers to the phenomenon that petals close in the evening; Getting up means reopening after sunrise.

Dandelion is not always my favorite. At first, only when the brothers are having fun will they pick "these humble little flowers"; Later, the wonderful changes of dandelion were discovered through observation. Since then, dandelion has become one of our favorite flowers.

Fourth, the composition abbreviation

Seventh grade biology examination paper (100 mark)

I. Multiple choice questions (18):

1, the following does not belong to the biological research content is ():

First, the population has increased sharply; B, environmental pollution; C. cancer; D, volcanic eruption

2, the basic unit of organism structure and function is ():

A, cells; B. organization; C, organs; D, system

3, plays an important role in biological inheritance is ():

A, cell membrane; B, DNAc, nucleus; chloroplast

4, the main organ of photosynthesis is ():

A, stalk; B, leaves; C. blades; chloroplast

5, the following narrative about the structure and function of plant cells, the error is ():

A, plant cells are the basic structure and functional units of plants.

B, plant cells have cell walls, cell membranes, cytoplasm and nuclei.

Most plant cells have chloroplasts and vacuoles.

D, the nucleus and cytoplasm of plant cells are separated from each other and are not connected with each other.

6, the following substances do not belong to the biological is ():

A, virus B, river water C, mushroom D, fish

7, tomato fruit is composed of which of the following layers ():

A, cell B, tissue C, organ D, substance

8, the organs of the following plants, belong to the reproductive organs is ():

A, root b, stem c, leaf d, flower

9, tomatoes on the market belong to ():

A, vegetative organs B, vegetative tissues C, reproductive organs D, and protective tissues

10, the main reason for biological physical ability to grow up at an early age is ():

A, the cell volume increases; B, cell division, volume increase.

C, the increase of cell number D, the quality of nutritional status

1 1, the structural level of human body is ():

A, cells → organs → tissues → human body B, cells → tissues → organs → human body

C, cells → tissues → organs → human body D, cells → tissues → organs → system → human body

12. Observe the temporary installation of tomato pulp cells. If "10×" eyepiece and "15×" objective lens are selected, the cells will be enlarged ();

A, 10 times b, 25 times c, 150 times d and 15 times.

13, Xiaoming planted 10 rice in the flowerpot, but no seedlings came out. Analysis of possible reasons ():

A, insufficient water in the soil; B, the outdoor temperature is too low

C, the seed coat has no D, and the embryo is destroyed.

14, stems and leaves on the ground of plants are developed from embryos ().

A, embryo B, hypocotyl C, cotyledon D, endosperm

15, the shape of vacuole when the root is dehydrated ();

A, unchanged b, bigger c, smaller d, smaller or bigger.

16, the following food belongs to the seed is ()

A, grapes b, cucumbers c, almonds d and wheat grains

17. The following raw materials for photosynthesis of green plants are wrong ().

A, the only raw material for photosynthesis is carbon dioxide;

B, one of the raw materials for photosynthesis is carbon dioxide;

Carbon dioxide and water are used to make starch.

D carbon dioxide and water are raw materials for photosynthesis.

18, the effective measure to improve the efficiency of photosynthesis is ()

A, high-density planting B, increasing carbon dioxide concentration C, increasing oxygen concentration D and increasing water content II. Fill in the blanks (12):

1. The basic structure of biological cells includes (), () and (), and the unique structure of plant cells is ().

2. Chloroplast can perform () function; Mitochondria can perform () function.

3. Green plants provide () and () for humans and animals.

4. Plants absorb and release () through photosynthesis, which affects the () cycle of the biosphere, and plants also participate in the water cycle of the biosphere through ().

Three, analysis questions (70 points):

1, Xiao Chen bought some oranges from the market and studied them carefully: (1) He cut an orange with a knife and a lot of juice flowed out. These juices are _ _ _ _ _ _, which comes from _ _ _ _ _ in the cell structure. (2) Take an orange and peel it off by hand. This kind of skin belongs to _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Xiaoming's uncle buys soybean seeds. Xiao Ming gave some advice to his uncle according to what he has learned now: the seeds to choose,

If possible, it is best to do seed testing.

According to his suggestion, uncle bought two kinds of soybean seeds and asked Xiao Ming to help him see which one was good.

Xiao Ming must first make an inquiry experiment design, and then carry out the experiment according to the design.

I encountered the following phenomena in the experiment. Please help him explain.

(1) Xiao Ming randomly takes 50 seeds from each variety, puts them in a small bowl, and then puts in a proper amount of water. In addition, there must be external conditions to make seeds germinate.

(2) Due to suitable conditions, the seeds began to germinate. The first thing to break through the seed coat is to develop into soybean in the future: after a period of time, it is found that the top of the root tip grows white fluff. These structures are the apical areas, and their main functions are.

(3) After15 days, 35 grains germinated in the first bowl and 45 grains germinated in the second bowl, so which variety should we choose? Why? (5 points)

.

(4) Xiao Ming continues to do experiments with these germinated seeds to see the future development.

Xiao Ming planted the germinated seeds in a flowerpot and put them on the windowsill. After a while, I found that it grew from the ground, with buds at the top, which could make plants grow taller. What if Xiao Ming removed the terminal bud? .

B, during the growing period, Xiao Ming has been watering plants because;

There are three main types of fertilization, namely, fertilizer, fertilizer and fertilizer.

C on one occasion, Xiao Ming took a leaf and made it into a temporary slide specimen. The material should be obtained. When observed with a microscope, you can see cells with green particles, which are part of leaves. The epidermis is effective,

There are many pores on it, which is very useful.

D. When Xiao Ming put a transparent plastic bag on a plant leaf, water droplets were produced after a while. Where do these water droplets come from? .

E, four months later, the plants have already blossomed, and they still need harmony to bear fruits and seeds. Among them, the fruit is from.

F Xiaoming and his classmate Xiaohong have different views. Xiao Ming thinks stamens are the main part of flowers, and Xiao Hong thinks petals are the main part of flowers. Who do you agree with? .

G. After harvesting, Xiao Ming weighed the total weight of a plant and found that it was 500 times the weight of the seeds planted. Why? (5 points)