This graph is an isoline, called a>b>0. Look at the graph and answer the question. Question 1: If this picture is a contour map, the following statement is correct.

Question 1:D

Questi

This graph is an isoline, called a>b>0. Look at the graph and answer the question. Question 1: If this picture is a contour map, the following statement is correct.

Question 1:D

Question 2: D.

Question 3: A.

Test analysis:

Item 1: isoline a>b>0. According to the principle analysis of isoline "higher than high value" and "lower than low value", the altitude at P is higher than A; Q is lower than B, so make sure that P is a hill on the hillside and Q is a depression on the hillside.

Question 2: If it is an isotherm, a high temperature center is formed at P, and it is judged as low pressure; Q forms a low temperature center and is judged as a mountain peak.

Question 3: If it is an isobar, then P is the center of high pressure. If downward flow prevails, the weather will be fine. Q is the center of low pressure, prevailing updraft, cloudy weather, and the isobar at the dotted line is "convex low is high", which is judged as the ridge line of high pressure and prevailing updraft, so the weather is clear and A is wrong.

Comments: This question belongs to the typical test of isoline comprehensive analysis, and its difficulty is average. The key to solve the problem is to master the basic law of isoline distribution, but the design of test questions lacks novelty, so some novel isoline test questions can be migrated.