要理由谢谢One of the problems in English teaching is devoing
题目
要理由谢谢One of the problems in English teaching is devoing
One of the problems in English teaching is devoing too much time to________.
A.a written work
B.written works
C.the written work
D.written work
当中那个词是devoting
答案
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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