They are doing research ___ the cause of SARS.A.into B.onC.at D.to答案是into,搞不懂.我也认为是on

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Theyaredoingresearch___thecauseofSARS.A.intoB.onC.atD.to答案是into,搞不懂.我也认为是onTheyaredoingresearch___th

They are doing research ___ the cause of SARS.A.into B.onC.at D.to答案是into,搞不懂.我也认为是on
They are doing research ___ the cause of SARS.
A.into B.on
C.at D.to
答案是into,搞不懂.我也认为是on

They are doing research ___ the cause of SARS.A.into B.onC.at D.to答案是into,搞不懂.我也认为是on
其实两个答案都是可以的,只是表达的意思有略微差别,On强调他们正在做的这个研究,into更强调他们的研究逐渐深入,而研究想最终达到的目的是the cause of SARS,两个答案没有谁对谁错,只是语境不同,上下文不同,而表意略有不同.如果没有上下文,可以很肯定地说两个都是对的.
其实中国这种考试题目本身就很有问题,出题的形式有问题,出的题也有问题,所以没有必要硬钻牛角尖,明白意思就可以了,如果为了考试死记硬背就行了.

What are they doing? what are they doing? what are they doing?急用! 还有一题:What.are.they.doing?They.are还有一题:What. are. they. doing?They. are the water What are they doing怎么回答 They are doing some reading.改为一般现在时 What are they doing英语作文 They are doing some very important ( ) (work) what are they doing怎么读 __________ __________ uesful work they are doing! What are they doing?--They___(play soccer) They are doing some English _(练习). They are doing homework now.改为祈使句 He watches TV______________._________ are they doing? what are they doing with it? what are they doing for vacation中文 What are they busy 后用加doing吗?（Wat are they busy doing?) They are doing----[they]homework 适当形式填空