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问题: 必修一

The newly-designed computer is used__the tickets which passengers buy.It also__a record of the date on which they will travel.
A.to record;keeps
B.for recording;sets
C.to recording;keeps
D.to record;sets

解答:

be used to do被用来做
be used for+sth/sb.被用来为了(某物/人)
be used to sth./doing 习惯于某事/做某事
keep a record (of sth.) 做(某物的)记录
选A
句意:新设计的计算机是被用来记录乘客所购票的情况。它还能记录他们(乘客)出行的日期。