People need plenty of fresh fruits and vegetables every day.(划线提问)
题目
People need plenty of fresh fruits and vegetables every day.(划线提问)
______ ______ fresh fruits and vegetables do people need every day?
答案
__How____ __many____ fresh fruits and vegetables do people need every day?
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.
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