来自太空讲台的科学课

On Thursday, a Chinese astronaut returned a science class from a space station under construction in the country. The lecture mainly explained how weightlessness affects buoyancy(浮力) and the movement of objects and optics(光学). Primary students from five cities, including Beijing and Hong Kong, interacted with the astronaut. The event was also open to the public through the live stream.

Wang Yaping, the only woman on the station, served as the main instructor, with the support of Ye Guangfu, and the commander-in-chief, Zhai Zhigang, who operated the camera. Wang taught similar lessons while riding one of China’s early experimental stations in 2013.

The three arrived at the station in October with a six-month stay, preparing the main Tianhe module(舱) for the arrival of two additional modules named Mengtian and Wentian, primarily before completion by the end of next year. Wang became the first Chinese female to do EVA last month. She and Zhai spent six hours outside the module installing the equipment and testing it with the robot service arm at the station.

Their mission, Shenzhou 13, has been China’s longest and third country after Russia and the United States since it first introduced humans into space in 2003. The three are the second crew members of the permanent station, which weighs about 66 tons when completed, much smaller than the International Space Station, which launched the first module in 1998, and weighs about 450 tons. The crew is evaluating the living conditions of Tianhe while installing equipment in preparation for the expansion of the station.

本时文内容由奇速英语国际教育研究院原创编写，未经书面授权，禁止复制和任何商业用途，版权所有，侵权必究！（作者投稿及时文阅读定制请联系微信：18980471698）

1.What subject did the lecture from the space station focus on?

A Physics.

B Chemistry.

C Language.

D Medicine.

解析：选A。A 细节理解题。根据文章第一段“The lecture mainly explained how weightlessness affects buoyancy and the movement of objects and optics”可以得知该课程主要讲解失重对浮力和物体运动的影响以及光学方面的知识，属于物理学科。故选A。

2.Who had experience in teaching lessons in space station?

A Ye Guangfu.

B Zhai Zhigang.

C Wang Yaping.

D Mengtian.

解析：选C。C 推理判断题。根据文章第二段最后一句“Wang taught similar lessons while riding one of China’s early experimental stations in 2013”可以得知王亚平在2013年上过太空课，因此她是有经验的。故选C。

3.The underlined word “EVA” in the third paragraph may refer to _______.

A activities outside Tianhe module

B two additional modules sent to space

C the movement of objects and optics

D the robot service arm at the station

解析：选A。A 词义猜测题。根据文章第三段该词所在句的后一句“She and Zhai spent six hours outside the module installing the equipment and testing it with the robot service arm at the station”可以得知，他们执行的是“出舱任务”，据此不难得知该词指代的含义。故选A。

4.Which of the following is a task of the crew in the space station?

A Getting ready for expanding the station.

B Taking apart some equipment.

C Fixing the International Space Station.

D Measuring the weight of modules.

解析：选A。A 细节理解题。根据文章最后一段的“The crew is evaluating the living conditions of Tianhe while installing equipment in preparation for the expansion of the station”可以得知他们在为空间站的扩建作准备，即这是他们的工作之一。故选A。