单选题With the introduction of the electronic computer, there is no complicated problem _____ can be solved in a few hours.AbutBwhichCthatDwhat

单选题
With the introduction of the electronic computer, there is no complicated problem _____ can be solved in a few hours.
A

but

B

which

C

that

D

what


参考解析

解析:
句意:由于引进了电子计算机,没有在几小时内解决不了的复杂问题。本题考查but的特殊用法,but除了作连接词外,还可以作关系代词,引导定语从句,以肯定的形式表达否定的意思,相当于“that/which…not”;本题若用that的话意思正相反。

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