Without electronic computers,much of today’s advanced technology________.[ ]
题型:同步题难度:来源:
Without electronic computers,much of today’s advanced technology________. |
[ ] |
A.will not have been achieved B.have not been achieved C.would not have been achieved D.had not been achieved |
答案
C |
举一反三
John had to have his house repaired because it ________ in the earthquake. |
[ ] |
A.damaged B.was being damaged C.had damaged D.had been damaged |
As he ________ in the river for five hours, the thief looked very pale and hopeless. |
[ ] |
A. trapped B. has been trapped C. trapping D. had been trapped |
At the end of the meeting, it was announced that an agreement . |
A. has been reached B. had been reached C. has reached D. had reached |
John had to have his car repaired in a garage because it seriously. |
[ ] |
A.damaged B.was being damaged C.had damaged D.had been damaged |
The coal miners________in the coal mine for 10 hours before we came to their rescue. |
[ ] |
A.had trapped B.had been trapping C.had been trapped D.would have been trapped |
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