These animals are all used to their environment;__they have learned how to live successfully in
题目
These animals are all used to their environment;__they have learned how to live successfully in
后面还有their habitat
A.for example B.what's more
C.that is D.or rather
答案
D
that is
(= i.e.)就是说,即
for example
例如
what's more
(常用作插入语)更重要的是,而且
or rather
确切地说,说得更准确些
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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