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The fifth generation computers, with artificial intelligence, ______ and perfected now.
The fifth generation computers, with artificial intelligence, ______ and perfected now.
admin
2010-04-24
55
问题
The fifth generation computers, with artificial intelligence, ______ and perfected now.
选项
A、developed
B、have developed
C、are being developed
D、will have been developed
答案
C
解析
根据题干,所填的动词应用被动形式,所以排除A 和B 。又根据句尾的now,应选择现在进行时的被动式,故答案为C 。
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专业英语四级
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