题目内容

Scientists say that laughter is ________.

A. good for us
B. serious
C. not really good
D. the worst medicine

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Laughter is good for _________.

A. our whole body
B. only the face
C. only the chest and shoulders
D. only the circulation

Laughter clubs ________.

A. are only in India
B. are places to learn jokes
C. help people feel better
D. are free

Complete these sentences with the words or phrases in the box.Blood pressurecirculationmusclespainkillerbrainheartbeatorganrelaxation1. When we laugh, we use 15 different in our face.2. Laughter is good for every in our body.3. When we laugh, our goes down.4. Laughter makes our better.5. A beta-endorphin is a natural .6. Laughter makes our _ lower.7. Laughter makes a natural painkiller in our .8. Forty-five minutes of is the same as one minute of laughter.

神州十三号航天员是（）。

A. 翟志刚
B. 王亚平
C. 叶光富
D. 刘伯明
E. 杨利伟