1.Sarah has ___been to the space museum .She knows nothing about it
题目
1.Sarah has ___been to the space museum .She knows nothing about it
A never B ever C also
2.Both Tina and John ___ boating on the lake this afternoon
A Is going B goes C are going D have been
3.____ of the hats fit him ,so Jack had to try on the third one
A Neither B Either C Both
4.He hasn't been to England ,____ I
A neither have B either have C so have D so haven't
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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