( )Lily will go to Japan _.A.by air B.by a plane C.on planes D.on plane
题目
( )Lily will go to Japan _.A.by air B.by a plane C.on planes D.on plane
( )It made me _ when I thought of my sick uncle
A.worry B.worrying C.be worried D.worried about
( )He likes to plant trees in April,_ his father and mother.
A.as well as B.as well C.as D.well
( )The pair of trousers _ them 30dollars
A.costs B.takes C.costes D.took
( )This is a new shirt.He _ yesterday.
A tried it on B.tried on it C.tried it up D.tried up it
答案
A.
B.
A.
A.
A.
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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