单选题
Microcomputer proves itself more and more important in the business, so additional machines are
purchased
.
A、
lent
B、
bought
C、
borrowed
D、
repaired
【正确答案】
B
【答案解析】
purchase“购买”；lend“借出”；borrow“借来”；repair“修理、修补”，bought为buy的过去时。
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