精英家教网 > 高中英语 > 题目详情

It is already well understood___________ causes the global warming.
A.whatB.whenC.howD.that
A
考查名词性从句。此题为it 作形式主语,真正的主语是后面的从句,从句中缺少主语,所以用what。
练习册系列答案
相关习题

科目:高中英语 来源:不详 题型:单选题


. I have taught hundreds of students,___________ having been working in their fields for years.
A.some of whomB.some of themC.most of whomD.who

查看答案和解析>>

科目:高中英语 来源:不详 题型:单选题


We’ve  made it a rule that ___________ comes home first cooks supper for the whole family.
A.whicheverB.whateverC.whoD.whoever

查看答案和解析>>

科目:高中英语 来源:不详 题型:单选题

Mr Black is the professor_________I have the greatest respect.
A.to whomB.for whom
C.whomD.who?

查看答案和解析>>

科目:高中英语 来源:不详 题型:单选题


What have you got _____ will help a cold?
A.whatB.thatC.itD.who

查看答案和解析>>

科目:高中英语 来源:不详 题型:单选题


Her sons, both of ______ work abroad, will come back home this summer.
A.thatB.whoC.themD.whom

查看答案和解析>>

科目:高中英语 来源:不详 题型:单选题


.____ you prefer, I’ll give it to you. But we haven’t any other models for you to choose from.
A.WhateverB.WheneverC.WhicheverD.However

查看答案和解析>>

科目:高中英语 来源:不详 题型:单选题


When changing lanes, a driver should use his turning signal to let other drivers know ______.
A.he is entering which laneB.which lane he is entering
C.is he entering which laneD.which lane is he entering

查看答案和解析>>

科目:高中英语 来源:不详 题型:单选题


After seeing the movie.____.
A.the book was read by himB.the book made him want to read it
C.he wanted t read the bookD.the reading of the book interested him

查看答案和解析>>

同步练习册答案