46题答案:A 考查细节理解题,根据文中的第一段They walk in space and use robots'arms and hands to do their work可知他们走在太空中,用机器人的手臂和手做他们的工作 是正确的,故答案A. 47题答案:B 考查细节理解题,根据文中的第二段Inside the space station,astronauts are comfortable可知 在太空站,...
1. Why does NASA do these experiments? A. Because it wants to know what kind of people can live on Mars. B. Because it wants to know whether humans live well on Mars. C. Because it wants to help astronauts get ready for coming home. D. Because it wants to understand the coming ch...
“But before he floats into his sleeping bag in there for the night, Matthias takes a little detour to one of the three ‘bathrooms’ currently on board the space station,” ESA says in comments accompanying the video. “Separated from the work areas and installed in different modules of th...
And when might the machines on Mars get human company? Will humans ever set foot on the Red Planet? Nobody's quite sure but at least you can read up on all things Mars while you wait. Get ready future astronauts because today we're talking Mars. How did it form? What's the ...
First, let's look at the parts of the space shuttle and a typical mission. The space shuttle consists of the following major components: two solid rocket boosters (SRB) - critical for the launch external fuel tank (ET) - carries fuel for the launch orbiter - carries astronauts and pa...
第二节 阅读短文,根据语篇要求填空,使短文通顺、意思完整。每空限填一词。Do you know, how astronauts work in space? Yes,
How is eating in space different from eating on Earth?If you send astronauts into space, you have to send along food as well. But what do astronauts eat,and how do they eat it? Scientists take several factors into consideration as they plan meals for space.First, and possibly most ...
How do astronauts go to the bathroom? We take toilet functions for granted here on earth, but astronauts don't have that luxury. Learn everything you didn't know you wanted to know about how to take care of business in zero gravity.
The space suit used by shuttle astronauts operates at 4.3 lb/in2, or 0.29 atm. Therefore, the cabin pressure of either the shuttle itself or an airlock must be reduced before an astronaut gets suited up for a spacewalk. A spacewalking astronaut runs the risk of getting the bends because ...
The International Space Station (seen here in 2018) has been continuously occupied by astronauts since 2000. NASA Imagine you wake up in the morning, look out your window and see the vast blue horizon of Earth and the blackness of space. Our world stretches out beneath you. Mountains, lake...