(改否定句和一般疑问句)1.she rowed a last week.2.we did home work yesterday.3.we run fast last
题目
(改否定句和一般疑问句)1.she rowed a last week.2.we did home work yesterday.3.we run fast last
year.4.Amy plays football well.5.There are enough pencils.
答案
1.Did she row last week?She didn't row last week.2.Did you do home work yesterday?We didn't do home work yesterday.3.Did we run fast last year?We didn't run fast last year.4.Does Amy play football wel...
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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