题目内容
(请给出正确答案)
[主观题]
After they ____ the first super computers in the 1940s, scientists and engineers began to develop ways to create networks.
A、create
B、created
C、have created
D、has created
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A、create
B、created
C、have created
D、has created
A.Was; before
B.Is; before
C.Was; after
D.Is; after
A、looked after
B、be looked after
C、being looked after
D、to be looked after
The sky is _____ after the rain .
A.clearing out
B.clearing away
C.clearing up
D.clearing off
A.took after
B.took up
C.took on
D.took in
A.before long
B.long before
C.after
D.soon after