According to paragraph 2, we should exercise hard enough to _______.

Câu hỏi :

According to paragraph 2, we should exercise hard enough to _______.

A Reduce the speed of the beating of our heart

B Increase the speed of the beating of our heart

C Feel the beat, or pulse, in our wrist or neck

D Keep your heart in a normal condition

* Đáp án

B

* Hướng dẫn giải

Phương pháp giải:

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