问题 多选题

如图所示s-t图象和v-t图象中,给出四条曲线1、2、3、4代表四个不同物体的运动情况,关于它们的物理意义,下列描述正确的是

[ ]

A.图线1表示物体做曲线运动

B.s-t图象中t1时刻v1>v2

C.v-t图象中0至t3时间内4的平均速度大于3的平均速度

D.两图象中,t2、t4时刻分别表示2、4开始反向运动

答案

BC

完形填空

阅读短文,并按要求完成1—5题。

Failure is what often happens. It is everywhere in our life. Students may fail in exams, scientists may fail in their research work, and players may fail in competitions. Although failure happens to everyone, different people’s attitudes(态度) towards failure are different.

Some people don’t think that their failure is an important thing at all. So they pay no attention to it. As a result, they will have the (A)      failure later. Some people think they themselves are fools and lose their hearts in everything after they get a failure. Then they(B)      their time and energy on useless things. At last, they may really be fools as they have thought.

(C)Other people are quite different from these two kinds of people mentioned above. Instead of being hopeless and lost, they draw a lesson from every failure and become more experienced. They will be successful after hard work in the end. So we should draw a lesson from every failure and become more experienced.

1题为判断正误,2补全句子,3翻译成汉语,4为回答问题;5找主题句。

小题1:Failure happens to everyone. (    )

小题2:在( A )、(B)处的横线上分别填上一个单词(A)        (B)           

小题3:将(C)处句子译成汉语:

    _______      _____________      ______________________________.

小题4:Why do some people pay no attention to their failure?

                                    ________________________      .

小题5:请找出第三段的主题句,写在横线上__________________________________________.

选择题