【题目】A spacesuit is much more than a set of clothes astronauts wear on spacewalks. A full spacesuit is really a one-person spacecraft. The spacesuit protects the astronaut from the dangers of being outside in space.

Spacesuits help astronauts in several ways. Spacewalking astronauts face different temperatures. Around the earth, conditions in space can be as cold as around -156 . In the sunlight, they can be as hot as 121 . A spacesuit protects astronauts from those extreme temperatures.

Spacesuits also provide astronauts with O2 to breathe while they are in the space. They contain water to drink during spacewalks. They protect astronauts from being hit by a small object in space. It may not sound very dangerous, but when even the small object is moving many times faster than a bullet, it can cause injury. Spacesuits also protect astronauts from radiation(辐射) in space. The suits even have parts to protect astronauts’ eyes from the bright sunlight.

The spacesuit includes several pieces. The body equipment covers the astronaut’s body. The arm equipment covers the arms and connects to the gloves. The helmet (头盔) and another equipment are designed to protect the astronaut’s head while still allowing him or her to see as much as possible. The Lower equipment covers the astronaut’s legs and feet. These parts have different functions(功能), from keeping O2 within the spacesuit to protecting from being hit.

Under the spacesuit, astronauts wear a set of cooling equipment. Tubes (管子) are put into this tight-fitting piece of clothing that covers the whole body except for the head, hands and feet.

Water moves through these tubes to keep the astronaut cool during the spacewalk. On the back of the spacesuit is a backpack. This backpack provides the O2 that astronauts breathe during a spacewalk. It also takes CO2 away. The backpack also provides electricity for the suit. A fan moves the O2 through the spacesuit and life support systems, and a water tank holds the cooling water that moves through the cooling device.

Another device called the Simplified Aid for Extravehicular Activity Rescue, or SAFER is necessary. If an astronaut became separated from the space station, he or she could use SAFER to fly back.

1What does a spacesuit provide according to the passage?

A. CO2.B. Food.C. Radiation.D. Electricity.

2What can we learn from the passage?

A. A small object hurts a little to astronauts in space.

B. SAFER helps astronauts return to the space station.

C. A spacesuit is just a kind of clothes to wear in space.

D. An astronauts needs to wear the spacesuit all the time.

3Which question can be answered in Paragraph 2&3?

A. What are the parts of a spacesuit?

B. What do astronauts wear in space?

C. Why do temperatures change a lot?

D. Why do astronauts need spacesuits?

 0  144372  144380  144386  144390  144396  144398  144402  144408  144410  144416  144422  144426  144428  144432  144438  144440  144446  144450  144452  144456  144458  144462  144464  144466  144467  144468  144470  144471  144472  144474  144476  144480  144482  144486  144488  144492  144498  144500  144506  144510  144512  144516  144522  144528  144530  144536  144540  144542  144548  144552  144558  144566  159627 

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网