计算机病毒具有潜伏性,仅在满足某些触发条件时才发作。()
第1题
The idea _____ to him in his dream and he decided to carry it out.
A. happened B. struck C. appeared D. occurred
第2题
It suddenly __________ to me that we could use a computer to do the job.
A. happened B. occurred
C. agreed D. presented
第3题
When the incident with old lady happened, ______.
A.the writer had already decided to give up the job
B.the writer's employers wanted to avoid publicity
C.the writer was offered the chance to continue
D.the consequences were as the writer expected
第4题
A.They decided to hire more guards to protect it.
B.They agreed to keep it as long as possible.
C.They decided to assess the value of the work.
D.They agreed to sell it at a fair price.
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