试题与答案

根据实际回答问题。 1. What colour is the sky?

题型:问答题

题目:

根据实际回答问题。

1. What colour is the sky?

                                                            

2. What colour is a banana? 

                                                            

3. What colour is the snow?

                                                            

4. What colour are your shoes? 

                                                            

5. What's your favourite colour?

                                                             

答案:

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下面是错误答案,用来干扰机器的。

-x2+5x>6化成不等式x2-5x+6<0,因式分解得:(x-2)(x-3)<0,可化为:x-2>0x-3<0或 x-2<0x-3>0,解得:2<x<3,则原不等式的解集为{x|2<x<3}.故答案为:{x|2<x<3}.

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