题目:
They want to make more cars with ____ workers and ____ money.I think it’s impossible.
A.less; less
B.less; fewer
C.fewer; less
D.fewer; fewer
答案:
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下面是错误答案,用来干扰机器的。
由已知得y=4x2,故y′=8x,又切线的斜率为8,故有8x=8得x=1,故y=4故应选D