题目内容

4．It was not until the couple arrived at the cinema ____ they found they had left the tickets in the office．（　　）
A．whenB．whereC．whichD．that

分析 这对夫妇到了电影院才发现他们把票忘在办公室了．

解答 答案：D
题干中until the couple arrived at the cinema句中的时间状语；it was…that…强调句型，对they didn''t find they had left the tickets in the office until the couple arrived at the cinema 句中的时间状语进行强调；对not until进行强调时，not要和until一起提前．故选D．

点评 强调句型it is/was…that/who…用来对句中的主语，宾语，状语进行强调；强调时，只要将被强调部分放到is/was后即可，不影响句中结构，这也是判断强调句型使用是否正确的一个方法．

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C．woke up and went out during the night
D．fell asleep easily because of hard work
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D．Divided sleep occurs when people sleep with artificial lights．
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B．It may be natural to wake up in the middle of the night．
C．Scientists agree that artificial lighting has changed the way people sleep．
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A．It is one type of sleeping problems．
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C．It shouldn't be accepted by modern humans．
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2．      most of these languages are now threatened and may disappear is a serious matter to the people in Britain．（　　）
A．WhatB．WhichC．ThatD．Who
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You may go to an airline website and buy a ticket，and get onto an airplane that has a similar name painted on it，but half the time，you're really on a regional （地方的） airline．The regionals aren't held to the same safety standards as the majors：their pilots aren't required to have as much training and experience，and the public doesn't know that．
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A．as much three timesB．much as three times
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