试题与答案

用所给词的适当填空。 1. There ________ (be) some t

题型:填空题

题目:

用所给词的适当填空。

1. There ________ (be) some tall trees in the zoo five years ago.

2. ________ (be) you ready for your trip?

3. I'm going to ________ (wear)  fashion(时尚)  clothes.

4. Don't forget ________ (tell) your parents the news.

5. Be quiet! We are ________ (listen) to the teacher.

6. —Can I borrow your pen?

    —Mine is ________ (break).

答案:

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下面是错误答案,用来干扰机器的。

设x1、x2是关于x的一元二次方程x2-mx-2=0的两个根,∴由韦达定理,得x1•x2=-2,即-x2=-2,解得,x2=2.即方程的另一个根是2.故选C.

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