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A. The man was reading something about the new product.
B. The man was talking on the phone.
C. The woman was interested in the new product.
D. The woman was bored with the telephone.

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DNA的转录(transcription)

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A. Eat something else.
B. Lose weight soon.
C. Tempt the man to eat something.
D. Buy some candies herself.

多核苷酸中磷酸和戊糖之间的连接键为()。

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

Nadya Fouad suggests in the last paragraph that__________.

A. managers be fully responsible for the uncivil work climate
B. the corporation make women more confident and wiser
C. the company help women settle their family problems
D. the corporation offer women the chance of promotion

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