一些英语问题,越快越好
题目
一些英语问题,越快越好
1、Henery killed the dog.I"ll ask him why _D__
A did he do that B he did that C he did D he hans done so
2 I am sure__D__he said is true.
A that B about that C of that D that what
3 Mary is __C__ someone might recognize her.
A afraid of B afraid about C afraid that D afraid for
4 They came to the conclusion__A__by a computer.
A that not all things can be done B because of not al things be done
C being not all things can be done D because not all things can be done
5 Why the explosion occurred was__D__the laboratory attendant had benn careless.
A for B because C since D that
帮我解释一下为什么选这些选项,分值很高的
答案
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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