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Whale beachings(搁浅)_______ be caused by factors such as illness, or disorientation(迷失方向)caused by extra noise in the oceans, ______ shipping or oil and gas drilling.
A.might; fromB.will; byC.should; inD.shall; on
A

试题分析:考察情态动词。本题第一空might也许;will将要;should应该;shall将要;句意:鲸鱼搁浅也许是由多种因素导致的,如疾病或者海洋里的噪音导致的迷失方向或者来自石油钻探。句中的from表示原因。第一空的might也许,表示不确定的原因,因为后面提出了多个具体的解释。故A正确。
点评:英语中有不少情态动词都可以表示推测,其语气有强有弱,表示的可能性有大有小,现将它们的用法归纳如下:1. 接近100%的可能,只有must才具有这么高的可能性,它的意思是“一定”“肯定”,所作出的推测几乎接近事实。如:He must be coming by bus. 他一定是乘公共汽车来。2. 很有可能,表示可能性较大的情态动词主要有may, should, ought to,它们大致相当于汉语的“可能”“应该”“按理会”。 3. 一般性的可能,在所有表示推测的情态动词中,might和could所表示的可能性最小,由于它们的语气较委婉,较不确定,所以往往相当于汉语的“可能”“也许”“说不定”等。4. 理论上的可能性,表示理论上的可能通常是用can,且可以用于肯定句中。
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