It is not always easy for the public to see _______ use a new invention can be of to human life.A.what B.that C.how D.which

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It is not always easy for the public to see _______ use a new invention can be of to human life.A.what B.that C.how D.which

It is not always easy for the public to see _______ use a new invention can be of to human life.A.what B.that C.how D.which
It is not always easy for the public to see _______ use a new invention can be of to human life.
A.what B.that C.how D.which

It is not always easy for the public to see _______ use a new invention can be of to human life.A.what B.that C.how D.which
选D
首先判断出can是谓语,前面 必须是主语,排除that（不能做主语）和how（后面要加to）
这里面如果用which是因为有”use a new invention“这样的动词修饰,而what不能被这样修饰

答案选A
典型的see动词引导的宾语从句，且从句中use为谓语，缺少主语
那么，引导宾语从句，并在宾语从句中做主语的，只有what.

选A
对于公众来说未必容易明白一项新发明对于人类生活有什么样的用处。see后面是宾语从句，在从句中a new invention 是主语，can be of 是复合谓语，前面的what use是宾语，to human life是状语。

c

选A

A

选B，新发明对人们生活有什么用途

IF IT IS NOT YOURS,IT ALSO ALWAYS IS Always thought was told me,it is not my Water is not always silent,sometimes it roars! 猜谜：What always travels on foot? 翻译句子：eas猜谜：What always travels on foot?翻译句子：east or west , home is the best? it is always this is not always what happens but it is what should happen特别是what 的用法 What is always before you,yet you can not see it?是什么What is always before you,yet you can not see it? Life is beautiful but it's not always sweet 汉语意思 it is not a big one,but there are always many things to do. It is worth reminding ourselves that this has not always been the case in America tourism was not always as it is today请问这句话是什么意思 谢谢 Love you?It is always hurt and tired,why not choose to make me happy? it becomes clear that just having knowledge is not always enough to work together __. It is always come,even challenge,I did not go away! Why is my life is always not? it is pleasant always?是什么意思 why is it always something? it is not big