单项选择题

(It is) (extremely) important (for) an engineer (to know) to use a computer.

A. It is
B. extremely
C. for
D. know
<上一题 目录 下一题>
热门 试题

单项选择题
Several (people) in the crowd seemed (as) they were fighting (for) a (ticket).
A. people
B. as
C. for
D. ticket
单项选择题
The fifth generation computers, with artificial intelligence, ______ and perfected now.
A．developed
B．have developed
C．are being developed
D．will have been developed
相关试题