They are doing research ___ the cause of SARS.

来源：百度知道编辑：UC知道时间：2024/09/21 08:09:57

A.into B. on
C. 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？Theysinging a song。 The boys are not doing a good job at all,are they? 改错What are dogs and cats doing? They are runing and playing the boy are not doing a good job at all,are they? 翻译一下：They are doing quite well in separate schools这一句话。 They are off to a good start.中的“be off to”to后跟do,还是doing? When people are bossy, I take my time doing what they want, just to show them. are they, do they 区别 Who are they ?They are teachers.(改错 Are you doing