英语单选(准确啊)谢谢
题目
英语单选(准确啊)谢谢
( )1.—______?
—They're workers.
A.Who are they B.What are they C.Where are they
D.How are they
( )2.________that picture.It's a nice picture.It's a nice picture.
A.Look B.Don't look C.Is D.Look at
答案
B,他们是做什么工作的
D
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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