在阵痛药理论研究中的重要工具药物是
A. 延胡索乙素
B. 纳洛酮
C. 强痛定
D. 喷他佐辛
E. 哌替啶
与氯丙嗪、异丙嗪合用组成冬眠合剂的药物是
A. 延胡索乙素
B. 纳洛酮
C. 强痛定
D. 喷他佐辛
E. 哌替啶
听下面5段对话。每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。 Why does the woman walk all the way to the office
A. She tries to keep fit by walking.
B. She wants to save money.
C. Her car has broken down.
How does the family make a living
A. Mainly by selling bread.
B. Mainly by delivering bread.
C. Mainly by making cakes and bread.
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