What controls the hot weather?

A, 2065438+August 1 1, in 2003, the high temperature area in China was large, and A was in the middle and lower reaches of the Yangtze River. At this time, it is dry weather in summer and controlled by subtropical high, so it is correct;

B, the Asian high is formed in winter, so it does not meet the meaning of the question;

C, the warm front crossing produces continuous rain, so it does not meet the meaning of the question;

D, this reason is artificial, so it does not meet the meaning of the question.

So choose: a.