问题 问答题 简答题

何谓压力?压力和压强是一回事吗?

答案

参考答案:

压力是指均匀而垂直作用在单位面积上的力,在物理学中把压力称为压强。

阅读理解

                               Visit Forest Zoo
Come and see the Indian elephants and the new tigers from Northeast of China. The beautiful birds from England are ready to sing songs for you, and the monkeys from Mount Emei will be happy to talk to you. The lovely dogs from Australia want to laugh at you. Sichuan pandas will play balls for you. The giraffes from Africa are waiting to look down on you.
Tickets                                Opening time:
Grown-up (成人): ¥3                    9:00 a.m.--- 4:00 p.m.
Children: Over(高于)1.4m: ¥2          except(除了) Friday:
Under1.4m:  Free              10:00 a.m. ---- 3:00 p.m.
Keep the zoo clean!
Do not touch(触摸), give food or go near to the animals.
小题1:How many kinds of animals are there in the zoo?
A Six.    B. Seven.   C. Eight.     D. Four.
小题2:How much does Mr. Smith have to pay if he visit the zoo with his son who is 1.45m?
A.4.B.5.C.7.D.6.
小题3:Can we visit the zoo at 9:30 a.m. on Friday?
A.No, we can’t.B.Yes, we can.C.If we pay, we can.D.We don’t know.
小题4:Which of the following is wrong?
A.We can hear the songs from English beautiful birds.
B.We can’t give the food to the animals to keep the zoo clean.
C.We can go to the zoo at 1:00 p.m. on Sunday.
D.We can touch the animals to show that we are friendly to them.
小题5:What is the passage?
A.A notice(通知).
B.A post(海报) from the zoo.
C.A result of an animal survey.
D.An essay(论说文).
单项选择题 A3/A4型题