___is certain is ___prevention is more important than treatment .A.It;that B.Wha
题型:不详难度:来源:
___is certain is ___prevention is more important than treatment .A.It;that | B.What;that | C.As;what | D.What;what |
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答案
B |
解析
B “____is certain”在句中做主语,主语从句缺少一个主语,需要用What; “___prevention is more important than treatment .”系表语从句,句意与结构完整,只有that,可以这样用。 |
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