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40. The main idea of this passage is that .
A. exercise is very important for everyone
B. exercise only twice a week is not enough
C. you should learn the suitable method of doing exercises
D. exercise burns fat from all over the body
A. exercise is very important for everyone
B. exercise only twice a week is not enough
C. you should learn the suitable method of doing exercises
D. exercise burns fat from all over the body
参考答案