题目内容

与50S亚基结合，阻断转肽作用的药物是

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A．temperatureB．speedC．moistureD．time

A. temperature
B. speed
C. moisture
D. time

静止期杀菌药是

第一节
听下面5段对话。每段对话后有一道小题，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。
听力原文：W: When do you leave for holiday？
M: On the twentieth. We're flying. The flight takes seven and a half hours.
W: And when are you back？
M：On the twenty-eighth. I will give you a ring when we're back.
How many days will the woman be traveling？

A. Ten days.
B. Eight days.
C. Fifteen days.

A．waveB．tideC．timedD．cause

A. wave
B. tide
C. timed
D. cause