改为否定句 Tom was at home yesterday.____________ My parents were very busy last week.___________
题目
改为否定句 Tom was at home yesterday.____________ My parents were very busy last week.___________
I went to the museum this morning._________
The twins saw an interesting film just now.__________
The boy could make dinner by himself.________
答案
Tom wasn't at home yesterday.My parents weren't very busy last week.I didn't go to the museum this morning.The twins didn't see any interesting film just now.The boy couldn't make dinner hy himself.
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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