China started its nuclear power industry only in recent years, and should ________
A. delay
B. lose
C. lag
D. lessen
查看答案
A) Of B) After C) In D) At
By describing a typical situation of a lost driver on the road, the author intends
A. make us believe how complex the highway computer network is.
B. let us know how in-car computers are linked to road signs.
C. show us how helpful a navigation computer can be.
D. tell us that NAVSTAR has come into use.
A．asB．hadC．couldD．did
A. as
B. had
C. could
D. did
We have done things we ought not to have done and ________ undone things we ought to have done.
A. leaving
B. will leave
C. left
D. leave
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