题目内容

18.House prices are usually much higher ________ there are subway stations around.(  )
A.whereB.unlessC.whileD.though

分析 在周围有地铁站的地方房价通常会更高.

解答 答案A.where"在…地方",引导地点状语从句.unless"除非,如果不",在意义上相当于if…not,因此在有些场合中unless与if…not可互换使用,引导条件状语从句.while意思是"当…的时候",引导时间状语从句;意为"尽管、虽然",引导让步状语从句;意为"而、但是",引导比较状语从句.though"尽管,虽然",引导让步状语从句.分析可知前后两句话之间是逻辑上的"地点"关系,再结合句子所表达的意思可知答案选A.

点评 本题考查从属连词的用法.连词的用法辨析,要注意分析主从句之间的逻辑关系,再确定相应的连词,同时注意不同的连词的语义及用法区别.

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1.Howling is a behavior commonly observed among a wolf nark.An animals,wolves work together to hunt and rely on howling was an important means of communication each other.There are different explants of a wolf's howl and it appears that there may be more to discover.One theory is that wolves howl to bend better together.It's almost as if howling together helps the pack stay together.Perhaps something similar to people feeling a sense of involvement with each other when singing a song together.But this theory may be wrong,explains Fred H.Harington,a professor who studies wolf behavior.Indeed,there have been tines when wolves have been seen one moment howling in a exhorts,and the next,quarreling anions each other.It appears that usually the lowest-tanking menthes of the pack may actually be"punished"for
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What is cleat,however,is that howling is often used among packmates to locate each other.Hunting grounds are distant and it happens that woloves may separate from one another at times.When this happens,howling appcars to be an ercellent means of gathering.
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