During the class, Tom slipped out of the classroom ____the back door so as not to be found by the teacher.
A. across B. in C. by D. beside
She is _____a growing number of Chinese people who find it increasingly difficult to find time to read every day.
A. between B. among C. during D. through
In the meantime, the question facing business is whether such research is the cost.
A. worth B. worth of C. worthy D. worthwhile
What’s the temperature in Beijing during April?
A. average B. common C. ordinary D. normal
We arrived on the platform just as the train was .
A. pulling up B. pulling down C. pulling out D. pulling into
He pretended to be Japanese, but his Chinese accent him .
A. gave；away B. gave；up C. gave；out D. gave；off
