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问题 选择题

若不等式x2-3x≤0的解集为M，函数f（x）=lg（1-x）的定义域为N，则M∪N=[ ]

A.[0，1）

B.（-∞，3]

C.（1，3]

D.[0，+∞）

答案

答案：B

选择题
— A good book is a good friend. You can get the help you need from it.
— You said it. _____.

A. I agree
B. I disagree
C. All right
D. That's a good idea
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选择题

--- Hurry up! We have to get going.

--- Just a minute. I ________the paper.

A．finish

B．finished

C．have finished

D．am finishing
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