问题 选择题

地球内部的结构,人类无法直接观察,到目前为止,主要来自对地震波的研究。据此回答问题。

小题1:在地下2900km处,纵波的传播速度突然下降,横波完全消失,可推测地球内部圈层当中为液体的是

A.软流层

B.上地幔

C.下地幔

D.外核小题2:地震发生时,附近轮船上的人的感觉是

A.左右摇晃

B.上下颠簸

C.先左右摇晃,后上下颠簸

D.先上下颠簸,后左右摇晃

答案

小题1:D

小题2:B

本题考查地球内部圈层和地震波。

小题1:地下2900KM处为古登堡面,经过古登堡面横波消失的地方为外核。

小题2:横波无法在液态总传播,故船上的人只会感到上下颠簸。

阅读理解

The junior high school graduates have to take a P.E. test in many places around China. The full marks are usually 30 points and it means much in the senior high school entrance exam.

In Nanjing, the test is held in April. Students have the test in their own schools. Each student is tested on three sports. They can choose long jump, basketball dribbling (运球) or volleyball. The pull-up is for boys and girls can choose the sit-up. Both boys and girls must skip in the test.

Most students find the test easy and more than 90%of them can get full marks. That’s because they have been training for it during the three whole years. Students in Junior Three usually do lots of practice in P.E. classes. The training makes the test easier than it seems to be.

Students in Nanjing don’t need to run a lot for the test, but students in Beijing must do lots of running for the test. Running is one of the sports in test. So in P.E. classes, they usually run a lot. Sometimes they have to run 3,000 meters in one class. Most teachers and parents welcome the P.E. test. They say it helps students build up their health.

小题1:The P.E. test in Nanjing includes all of these sports except __________.

A.skipping

B.basketball

C.football

D.volleyball小题2:Students in Nanjing have the P.E. test in __________.

A.spring

B.Junior One

C.autumn

D.Junior Two小题3:The underlined word “pull-up” means “__________” in Chinese.

A.仰卧起坐

B.引体向上

C.俯卧撑

D.跳高小题4:Which of the following is TRUE according to the passage?

A.All the students must be tested on skipping in Nanjing.

B.Few students in Nanjingcan get full marks in the P.E. test.

C.Students in Beijing needn’t run during the test.

D.Students in Nanjing should take part in four sports in the P.E. test.小题5:What do most teachers and parents think of the P.E. test? _____________

A.It is difficult.

B.It is easy.

C.It is bad.

D.It is good.

单项选择题