Before exercise. You’d better do something to warm up first. When warming up, you’ll breathe a little bit faster.

admin2009-06-15  50

问题 Before exercise. You’d better do something to warm up first.
When warming up, you’ll breathe a little bit faster.

选项 A、Right
B、Wrong
C、Not mentioned

答案B

解析 见首段末句。
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