Their school is very big and there are ________ students in their school.
题目
Their school is very big and there are ________ students in their school.
A.thousand of B.several thousand of
C.thousands of D.two thousands
并分析考察的知识点,
答案
C.thousands of
thousands of是数以千计的意思
A,没有那个词组
B.应该是several thousands of ,选项中没加S
D,应该是two thousand,前面有数字后面不能加S
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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