英语选择题about—— of the students took part in the activity last night
题目
英语选择题about—— of the students took part in the activity last night
A-three fifths
B-third five
C-thirds five
D-three fifth
答案
选A
表达“几分之几”时,分子用基数词,分母用序数词,当分子大于1时,分母加s.
所以“五分之三”表示成:three fifths
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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