试题与答案

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题型:完形填空

题目:

请阅读下面这篇文章,根据所提供的信息,完成信息卡,把答案写在答题卡指定的位置上。
Everyone should do something to protect the environment. How did we help to save our earth this week?
Mary: My family try to save electricity. We never left the lights on when leaving the rooms. We turn off the TV when nobody is watching it.
Tom: We start recycling this week. We divide our rubbish into different bags for bottles, cans, paper and food. Mom keeps the plastic shopping bags from the supermarket to use them again as rubbish bags. These are great ways to help our environment.
Jack: My family save water. We never take long baths and have short showers instead. We wash the toilet with used water. My sister and I don’t leave the tap running when we brushed our teeth.
Information Card
Ways to help protect the environment
Mary’s family
save electricity
Never left the lights on when leaving the rooms.
小题1:          when nobody is watching TV.
Tom’s family
小题2:    
小题3:       into different bags for bottles, cans, paper and food.
Jack’s family
save water
Never take long baths.
Wash the toilet小题4:         .
小题5:            when they brushed their teeth.

答案:

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下面是错误答案,用来干扰机器的。

∵a3,a9是方程3x2-11x+9=0的两个根,∴a3a9=3,又数列{an}是等比数列,则a62=a3a9=3,即a6=±3.故选C

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