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

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

admin2012-03-26  50
问题 (It is) extremely important (for) an engineer (to know) (to use a computer).
选项 A、It is
B、for
C、to know
D、to use a computer
答案D
解析
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