The man in a white uniform is a doctor .对 in a white uniform 提问 __ ___ is a doctor?
题目
The man in a white uniform is a doctor .对 in a white uniform 提问 __ ___ is a doctor?
Nurses wear uniforms because patients can find them easily .对 because patients can find them easily提问
___ ____nurses wear uniforms?
答案
Which man is a doctor?
Why do nurses wear uniforms?
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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