问题 实验题

(多选)用位移传感器、数据采集器和计算机等器材测量运动物体的加速度,如图所示为该实验得到的图象.下列说法正确的是

A.使用位移传感器实验操作时比较方便,可直接用s-t图处理数据

B.位移传感器测得一系列数据,通过数据采集器和计算机可转化为v-t图

C.可在计算机软件界面得到加速度随时间变化的图象

D.能采集到整个运动过程的数据,可以通过图象分析物体速度的变化情况

答案

BD

过程是这样的,利用位移传感器测得一系列数据,然后通过数据采集器和计算机可转化为v-t图像,能采集到整个运动过程的数据,可以通过图象分析物体速度的变化情况。故正确选项为BD

判断题
阅读理解

We find that bright children are rarely held back by mix-ability teaching. On the contrary, both their knowledge and experience are enriched. We feel that there are many disadvantages in streaming pupils. It does not take into account the fact that children develop at different rates. It can have a bad effect on both the bright and the not-so-bright child. After all, it can be quite discouraging to be at the bottom of the top grade!

Besides, it is rather unusual to grade pupils just according to their intellectual ability. This is only one aspect of their total personality. We are concerned to develop the abilities of all our pupils to the full, not just their academic ability. We also value personal qualities and social skills, and we find that mixed ability teaching contributes to all these aspects of learning.

In our classrooms, we work in various ways. The pupils often work in groups: this gives them the opportunity to learn to co-operate, to share, and to develop leadership skills. They also learn how to deal with personal problems as well as learning how to think, to make decisions, to analyze and evaluate, and to communicate effectively. The pupils learn from each other as well as from the teacher.

Sometimes the pupils work in pairs; sometimes they work on individual tasks and assignments, and they can do this at their own speed. They also have some formal class teaching when this is proper. We encourage our pupils to use the library, and we teach them the skills they need in order to do this efficiently. And advanced pupil can do advanced work. It doesn’t matter what age the child is. We expect our pupils to do their best, not their least, and we give them every encouragement to obtain this goal.

小题1:By “held back” (the underlined part of the first sentence) the author means “______”.

A.drawn to their studies

B.prevented from advancing

C.made to remain in the same class

D.forced to study in the lower class小题2:The author argues that a teacher’s chief concern should be the development of the pupil’s ______.

A.total personality

B.intellectual ability

C.personal qualities

D.communicative skills小题3:Which of the following is NOT mentioned in the third paragraph?

A.Pupils also learn to develop their reasoning abilities.

B.Pupils also learn how to participate in teaching activities.

C.Group work gives pupils the opportunity to learn to work together with others.

D.Group work provides pupils with the opportunity to learn to be good organizers.