单项选择题

Because of the complexity of the modem machine, most offices require secretaries（）

A. to have specified training
B. specified in training
C. to train specially
D. training specified

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单项选择题
（34）（）

A. plant
B. supplant
C. transplant
D. replant
单项选择题
Great efforts to increase wheat production must be made if bread shortages（）avoided.

A. will be
B. can be
C. are to be
D. were to be
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