A. adapt to B. subscribe to

C. apply to D. turn to

【题目】Backward somewhat technologically ________ we are for the moment, we have confidence in our ability to catch up in time.
A.although
B.if
C.as
D.once

【题目】—What a pity! George ________ well quit the trip to Hangzhou.
—Let me phone him for the final decision.
A.can
B.must
C.shall
D.may

【题目】It may be necessary to stop ______in the learning process and go back to the difficult points in the lessons.
A.at intervals
B.at random
C.at ease
D.at length

【题目】—Was the proposal passed at yesterday's meeting?
—Yes, but some members of the committee expressed ________.
A.association
B.reservation
C.authority
D.corporation

A. as B. once

C. though D. unless

A. drop off B. drop in

C. get away D. drop out