Question

It was a physical class. But it was nothing like previous ones — the class was “attended”

by over 60 million students across China, and the teacher was not even on the planet: she was 340 kilometers above the earth.

“Hello, everyone. I’m Wang Yaping. I’ll host your lecture today.” Smiling to the camera, Wang, China’s second female astronaut, started her video class on June 20 on board the Tiangong-1 space station.

To show how Newton’s Laws work in space, Wang and her fellow astronauts used simple items like balls and spinning tops. The highlight of the lecture was when Wang made a film of water using a metal ring, something that only happens in zero gravity, where the surface tension(张力) of water is much higher than it is on the earth. She then took it a step further by pouring more water onto the film and turning it into a water ball, leaving the audience amazed by what they saw.

The 40-minute lesson seemed to have passed too quickly for students to see enough of those magical experiments. But sending stuff into space is really expensive. According to The Beijing Times, every kilogram launched into space cost 20,000 dollars. The experimental items taken this time were all strictly selected and weighed about 2.9 kilograms in total. This adds up to quite a large price tag.

The organizers of the event also had to consider the time of day: the communication signal between the earth and Tiangong-1 was best during that specific 40 minutes, when the spacecraft was flying within the coverage of all of the ground-based testing stations.

1.Why is the class different from a common one?

A. Because it took 40 minutes.

B. Because over 60 million students across the world attended it.

C. Because the teacher was on the planet.

D. Because the lecturer was in space.

2.One of the experiments shows         .

A. object motion under weight conditions

B. laws of physics under weightless conditions

C. laws of physics under weight conditions

D. how Newton’s Laws work on the earth

3.Which phrase can best replace the underlined words in the passage?

A. took a photo of water.

B. recorded moving pictures of water.

C. made a thin layer of water.

D. all the above.

4.Which of the following statements can be the best title of the passage?

A. Teaching from the Sky.   B. Teaching on Physics.

C. Teaching Experiments.     D. Teaching by an Astronaut.

Answer

1.D

2.B

3.C

4.A

【解析】

试题分析：本文讲述的是宇航员们在天宫一号上面向全中国学生上了一堂为时40分钟的别开生面的物理实验课。

1. was a physical class. But it was nothing like previous ones — the class was “attended” by over 60 million students across China, and the teacher was not even on the planet: she was 340 kilometers above the earth.大意：这是一节物理课，但不像先前的那些一样——这节课由全中国超过60万的学生参加；物理老师甚至不在星球上：她远在离地球340千米的外太空。由第一段没提到A选项，排除A；这节物理课的参加者是中国的学生而不是全世界，排除B；老师在太空而不是星球上，故排除C，故选D.

2. show how Newton’s Law work in space, Wang and her fellow astronauts used simple items like balls and spinning tops.句意：为了在太空演示牛顿定律是怎样发生的，王和她的宇航员同事们用了像气球和抽陀螺这些简单的物品；一般在太空中无论人或者物都是失重状态，故排除A,C,D, 选B.

3. highlight of the lecture was when Wang made a film of water using a metal ring, something that only happens in zero gravity, where the surface tension(张力) of water is much higher than it is on the earth. She then took it a step further by pouring more water onto the film and turning it into a water ball, leaving the audience amazed by what they saw.句意：讲课的亮点是用一个金属环做一个水的薄膜，这种水薄膜只有在当水表面的张力比在地球上的高的失重的情况下产生。她接着倒了一些水在这个水薄膜上是薄膜成了一个水球，这让观众们感到所看的都很神奇。A.给水照了一张相片B.记录了水的动图C.做了一个水薄膜D.以上皆是。A.B在文中并没有提到，D选项错误，故选C。film除了有电影，胶片的意思还有薄膜等意义。

4. ; A比较有新意，比较的吸引读者，故选A

考点：考查说明文阅读。