where are my keys?AThere are they,Bthere they are,Cthere are ,Dhere are选哪个求详细解释
题目
where are my keys?AThere are they,Bthere they are,Cthere are ,Dhere are选哪个求详细解释
答案
B
类似于here you are.给你.
they 是代词不用倒装,A错.
此处不能省略,故B
变为陈述句是They are there.它们在那边
举一反三
已知函数f（x）=x，g（x）=alnx，a∈R．若曲线y=f（x）与曲线y=g（x）相交，且在交点处有相同的切线，求a的值和该切线方程．
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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