英语句子变一般疑问句和否定句
题目
英语句子变一般疑问句和否定句
1.you are now sports?yes,I'm learning to skate
2.sister's watering trees
3.where's your mother?she was cooking in the kitchen
4.jim,you are the classroom?I was writing
答案
1.are you sporing now?No,I'm not learning to skate.2.Is sister watering trees?No,sister isn't watering trees3.Was your mother cooking in the kitchen?No,she wasn't cooking in the kitchen.4.Jim,are you ...
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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