选词填空：1.Mr Black ＿(teach,teaches) Maths in a middle school.2.These students＿(is,are) fr
题目
选词填空：1.Mr Black ＿(teach,teaches) Maths in a middle school.2.These students＿(is,are) fr
选词填空：1.Mr Black ＿(teach,teaches) Maths in a middle school.2.These students＿(is,are) from Class Five.3.we'd like ＿(go,to go)home together.4.Don't ＿(talk,talking) to the stranger.5.＿(is,has,does)Wang Lin have an American friend?
答案
teaches
are
to go
talking
Has
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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