题目

—What’s on the table in the kitchen? —There ________ some bread and an egg. A. are                         B. is                         C. was                       D. were 答案:B(2016·怀仁期中)已知命题:x∈[-1,2],函数f(x)=x2-x的值大于0.若∨是真命题,则命题可以是(  )A. x∈(-1,1),使得cos x<B. “-3<m<0”是“函数f(x)=x+log2x+m在区间上有零点”的必要不充分条件C. 直线x=是曲线f(x)=的一条对称轴D. 若x∈(0,2),则在曲线f(x)=ex(x-2)上任意一点处的切线的斜率不小于-1
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