问题
选择题
In _______ 1940s the computer was made to work as _______ useful machine.
A．the; an
B．the; a
C．/; a
D．/; an
答案
答案：B
考查冠词。1940s20世纪40年代前用the修饰；useful以辅音开头，用a修饰machine。选B。
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In _______ 1940s the computer was made to work as _______ useful machine.
A．the; an
B．the; a
C．/; a
D．/; an
答案：B
考查冠词。1940s20世纪40年代前用the修饰；useful以辅音开头，用a修饰machine。选B。