A tour group is going to travel to Tibet in late July. The leaflet of the travel agency suggests: ① coat cotton-padded clothes in the morning and evening; ② Prepare parasols and sunglasses; ③ Intentio

A tour group is going to travel to Tibet in late July. The leaflet of the travel agency suggests: ① coat cotton-padded clothes in the morning and evening; ② Prepare parasols and sunglasses; ③ Intentionally.

Question 1:A?

Question 2: B?

Question 3: A.

Test analysis: 1: A tour group will travel to Tibet in late July. The leaflet of the travel agency suggests: ① coat cotton-padded clothes in the morning and evening; ② Prepare parasols and sunglasses; ③ People with heart, brain and blood diseases should not travel to Tibet; ④ Bring raincoats, etc. The reason is that Tibet is located in the Qinghai-Tibet Plateau, with high altitude, high terrain, large daily temperature difference, thin air, strong light, high altitude and low air pressure, but there are many sunny days and it doesn't rain often.

Question 2: During the trip to Tibet, members of the tour group can see that the crops in this area are mainly distributed in the valley areas with low altitude. Because of the high altitude and insufficient heat, the cultivation in this area is mainly distributed in the valley areas with low altitude and high temperature.

Question 3: The reason why the ears of highland barley and wheat planted in this area are large and full is because of strong light and large temperature difference between day and night, which is beneficial to the growth of crops.

Comments: This problem can also be investigated in the alpine Qinghai-Tibet region: Kunlun Mountain, Qilian Mountain, Hengduan Mountain and Himalayan Mountain, including Qinghai-Tibet Province and western Sichuan. It belongs to plateau and mountain climate. Natural landscape: ① Snow peaks are continuous, glaciers are vertical and horizontal, and most rivers in Asia originate from here, so it is called "China Water Tower". (2) The plateau in northern Tibet is undulating, grasslands and deserts are widely distributed, the mountains in the southeast edge are high and the valleys are deep, and the rivers such as Nujiang, Lancang and Jinshajiang are turbulent. (3) Lakes are all over the country. It is the largest group of saltwater lakes in China, the largest of which is Qinghai Lake. (4) Farmland, villages, towns and cities are mostly distributed in valley areas with low altitude. ⑤ High altitude, thin air, less moisture, long sunshine time, strong solar radiation and abundant solar energy; Lhasa "Sunlight City". Qinghai-Tibet pastoral area and Qinghai pastoral area are both alpine pastures. Excellent livestock breeds are yak and Tibetan antelope. Valley agriculture in Qinghai-Tibet region: Qinghai-Tibet region has high terrain, cold climate and harsh natural conditions, and the plateau is not suitable for the growth of crops. Only in the valley area with low altitude, the hydrothermal conditions are relatively good, which is suitable for developing planting production. Therefore, valley agriculture has been formed in southern Tibet valley and Huangshui valley.