试题与答案

现抽出3位教师参与一项研究。该研究的目的是验证不同类型的教材对初中二年级自然科学课学

题型:问答题

题目:

现抽出3位教师参与一项研究。该研究的目的是验证不同类型的教材对初中二年级自然科学课学习是否有所不同。其中两名教师每人教4个班的初中二年级自然科学课,一名教师教3个班。其中有一所学校的班级是按照能力分组的。碰巧,参与研究的这个学校的这名教师教的是能力高的班级。每位教师使用1种教材,试用教材的时间为9周。教师们使用不同的材料,没有教师使用超过一种的材料。9周以后,对学生进行自然科学的成绩测试,每位教师使用各自出的试卷。根据研究计划,研究者计算出使用3种教材的自然科学的平均分数。
对于3种教材的相对结果,我们能得出什么结论呢为什么呢如果得不出什么结论,为什么呢怎样改进

答案:

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参考答案:A

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At the time friends visit us in the evening, they often tell us they are in a hurry and look at their watches. It isn’t that our friends are all very busy; it is just that we haven’t got a television. People think that we are very strange. "But what do you do in the evening", they are always asking. The answer is very simple. Both my wife and I have hobbies. We certainly don’t spend our evenings looking at the walls. My wife enjoys cooking and painting and often attends evening classes in foreign languages. This is quite useful as we often go abroad for our holidays. I collect stamps and I’m always busy with my collection. Both of us enjoy listening to the music and playing chess together.

Sometimes there are power cuts and we have no electricity in the house. This does not worry us and we just light candles and carry on with what we were doing before. Our friends, however, are lost—no television! —So they don’t know what to do. On such evenings our house is very full for they all come to us. They all have a good time. Instead of sitting in silence in front of the television, everybody talks and plays games.

The writer tries to tell us that ().

A.life is possible without a television

B.life is enjoyable with many friends

C.electricity is important

D.television is useful

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