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题目
题型:不详难度:来源:
The fifth generation computers, with artificial intelligence, _____ and perfected now.
A.developed B.have developed
C.are being developed D.will have been developed

答案
C
解析

核心考点
试题【The fifth generation computers, with artificial intelligence, _____ and perfecte】;主要考察你对一般现在时等知识点的理解。[详细]
举一反三
Active reading will result in a better understanding of what _____.
A.is being readB.to be readC.to readD.being read

题型:不详难度:| 查看答案
It"s reported that by the end of this month the output of cement in the factory _____ by about 10%.
A.will have risen B.has risen C.has been risenD.will be rising

题型:不详难度:| 查看答案
Until then, his family _____ from him for six months.
A.didn"t hearB.hasn"t been hearing
C.hasn"t heardD.hadn"t heard

题型:不详难度:| 查看答案
–It must have been lots of fun riding round in a car.
–Yes, you know this was the first time that _____ round in my own car.
A.I rodeB.I should have ridden
C.I’ve been ridingD.I’d ridden

题型:不详难度:| 查看答案
As _____ announced in today"s papers, the Shanghai Export Commoditiser Fair is also open on Sunday.
A.beingB.isC.to beD.been

题型:不详难度:| 查看答案
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