选择填空:( )—________ ________ fighting?—Yes,they are.A.Can they B.Are they C.What are
题目
选择填空:( )—________ ________ fighting?—Yes,they are.A.Can they B.Are they C.What are
The lions _____ _____in the woods.
A.are run B.are runing C.are
Please do an experiment _________the cat.
A.in B.on C.at
The tigers can ________ in the river.
A.swim B.is swimming C.are swimming
Let's ________together.
A.piay the chess B.play chess C.playing chess
Look!Amy is running __________us.
A.to B.for C.at
Tell__________we're coming.
A.she B.her C.he
—Is Mike jumping.
—Yes,___________.
A.he is B.she is C.he can
Where's Mike?____________.
A.She;s over there B.He's over there C.He's running
Can you wash clother?___________.
A.Yes,I am B.Yer,I can C.Yes,I do
答案
B
B
B
B
B
A
B
A
B
B
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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