题目内容

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A. People with stress prefer to listen to music.
B. People can release stress by listening to music.
C. People who don"t listen to music get more stressed.
D. People get stressed after working for a long time.

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在DNA的碱基对之间的连接键为()。

A. 肽键
B. 氢键
C. 糖苷键
D. 磷酸酯键
E. 3’.5’一磷酸二酯键

Every year, NOAA predicts the sardine population and sets fishing limits according toa system, which Oceana wants to change, believing it‘s too loose.
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核酸是()。

A. 细胞内的一种生物大分子
B. 细胞内的一种生物小分子
C. 仅存在于细胞核内
D. 仅存在于细胞质内
E. 有双螺旋结构

Passage Two
Questions are based on the passage you have just heard.
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A. They have the same kind of culture.
B. They are wild in different ways.
C. They have most traveled areas.
D. They have cutting edge technology.

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