题目内容

18.You can't complain of being lonely         you don't make any effort to communicate with others.(  )
A.whenB.untilC.unlessD.once

分析 既然你不愿和别人交流,你就不能抱怨孤独.

解答 答案:A 
句意表达的是因果关系;until直到,unless除非,once一旦;when除了表示时间外,还有既然的含义.故选A.

点评 从属连词是连词的一种,用来引导名词性从句和状语从句.大致可分为三大类:that(无词义,不做成分)if,whether (表达是否的意义,但不做句子成分); 连接代词:who,whom,whose,what,which,whatever,whoever,whichever(有词义,在句子中可作主语、表语、宾语);连接副词:when,where,why,how,how many,how long,how far,however,whenever,wherever (有词义,作从句的状语).学习时,要注意区分和掌握.

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This is despite studies showing that communities already facing marginalization(边缘化),such as women and children,mostly suffer from climate change.This is especially the case for those in countries with limited resources and fragile ecosystems.
Meanwhile,women consist of the majority of the world's poor,and so are more dependent for their livelihood on natural resources that are threatened by climate change.And around the world,women and girls are the most likely to be responsible for fetching water for their families.
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A.two hours  
B.four hours   
C.more than four hours    
D.almost a whole day
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A.the cause and effect of lack of water  
B.one serious consequence of climate change
C.the difficulties in fetching water in the semiarid region
D.the hardship of life for the people in the semiarid region
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A.climate change is everyone's business
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A.rising temperatures       
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