多项选择
题目
多项选择
1.how many pencils do you have --------------
a.guess b.open it and see c.twelve d.i'm fine.thank you .
2.she's my mother .---------
a.really?b.she's beautiful c.who's that man d.is she your mother
3.let's fly a kite .______________-
a.ok!b.great!c.good idea d.that's right.
4.hi ,look at my new sharpener!_______
a.how nice b.wow!
c.cool!d.what a good sharpener!
小学PEP英语三年级教师,请进
答案
1.a c
2.a b
3.a b c
4.a b c d
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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