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题目
题型:不详难度:来源:
Everyone knows that________ is dangerous to play with fire, but________ is difficult is to prevent children from playing with fire.
A.it; itB.what; whatC.what; itD.it; what

答案
D
解析

试题分析:考查it作为形式主语和主语从句。第一空的it是形式主语,真正的主语是后面的不定式to play with fire;第二空是一个主语从句what is different,在这个主语从句中what引导起主语从句且作为主语。句意:每个人都知道玩火是很危险的,但是真正困难的是阻止孩子们玩火。故D正确。
点评:主语从句属于名词性从句,名词性从句的考查集中在引导词的选择上,连接词that, whether, if在句中不充当任何成分,只起连接作用;连接代词who(ever), which(ever), whom(ever),whose(ever),what(ever)在句中做主语,宾语,表语和定语;连接副词when, why, where, how,在句中做状语。应从上下句的句法关系着手分析,切不可‘望句形生答案’总的来说,考生在解答此类型时,可用排除法或造句法,造句法就是仿造原句的语法功能仿造出一个易懂易理解的句子,帮助判断。
核心考点
试题【Everyone knows that________ is dangerous to play with fire, but________ is diffi】;主要考察你对代词等知识点的理解。[详细]
举一反三
I asked for some more cake, but there was               left.
A.no oneB.noneC.a littleD.a few

题型:不详难度:| 查看答案
The children were required to wear new school clothes, but Kim couldn’t afford         .
A.oneB.someC.anyD.that

题型:不详难度:| 查看答案
I would appreciate ______ very much if you could change the plan a bit to make it more workable.
A.thatB.thisC.itD.you

题型:不详难度:| 查看答案
I’d rather ride a bike as bike riding has _____ of the trouble of taking buses.
A.muchB.allC.neitherD.none

题型:不详难度:| 查看答案
—How do you find your classmates?
—Most of them are kind, but ____ is so good to me as Peter.
A.noneB.no oneC.every oneD.some one

题型:不详难度:| 查看答案
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