单项选择题

（）the temperature going down so quickly, I don't think we are able to go on with our experiment.

A. For
B. By
C. From
D. With

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To get into the habit of smoking means（）one's own life ...

单项选择题To get into the habit of smoking means（）one's own life short.

A. make
B. making
C. to make
D. made