"Young trees should be____?.
题目
"Young trees should be____?.
1.Young trees should be____?
A.taken good care B.take good care of
C.looking after well D.well looked after
2.Tom____soend time with his parents.
A.doesn't need to B.needn't to C.doesn't need
D.needs
3.The dictionary musn't____from the library.
A.take away B.taken away C.are taken away
D.be taken away
答案
1.D.well looked after
2.D.needs
3.D.be taken away
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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