Which do you think is ________ city, Beijing, Chongqing or Chen du?

A. more beautiful B. the most beautiful C. the more beautiful D. most beautiful

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Which color do you like, blue or pink ?

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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(輻射) 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 (頭盔) 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.

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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.

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B. What do astronauts wear in space?

C. Why do temperatures change a lot?

D. Why do astronauts need spacesuits?

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