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三、回答问题
KEY→P23
范畴:人与自然
主题:宇宙探索
体裁:说明文
难度:★★★
建议用时:6分钟
评价:/5
Celebrating your birthday in space would be very different from what you might do on the earth. For example, your birthday cake would be floating in front of you. The candles could not be lit because astronauts must be very careful not to start a fire in the shuttle. Your friends could still sing "Happy Birthday to You". Voices are almost the only things that are not changed by being weightless. Everything has almost no weight in space. This is because there is very little gravity in space.
Some astronauts feel sick for the first few days in space. This feeling usually goes away. Some astronauts feel as if they had a cold all the time. That's because without gravity the fluids in their bodies move toward their heads. Astronauts look a little different in space. More blood flows to the face, so their faces look a little fatter. For the same reason, their waists get smaller and their chests get bigger.
Astronauts grow one or two inches in space. That's because gravity is not pressing on the spine(脊柱). The spine relaxes and stretches. Back on the earth, astronauts shrink to their regular height. In space, bones and muscles get weaker. That's because muscles are not used as much as before and the bones lose mineral density. Besides, the heart becomes a little weaker.
Since everything has almost no weight in space, astronauts can lift heavy objects easily. They can even lift each other! However, it is harder to stay still in space than to move around. The only way to stop moving is to hold on to something. The space shuttle has handholds and foot loops. The astronauts can also tie themselves to a seat or a wall. There are pieces of Velcro to stick things in order to keep them from floating around.
根据短文内容,回答下列问题。每题答案不超过7个词。
1. What CAN'T be done if you celebrate your birthday in the shuttle?
2. How do some astronauts feel for the first few days in space?
3. Why do astronauts' faces look fatter in space?
4. Which part(s) of an astronaut's body may grow weaker in space?
5. What do you think of living in space?
KEY→P23
范畴:人与自然
主题:宇宙探索
体裁:说明文
难度:★★★
建议用时:6分钟
评价:/5
Celebrating your birthday in space would be very different from what you might do on the earth. For example, your birthday cake would be floating in front of you. The candles could not be lit because astronauts must be very careful not to start a fire in the shuttle. Your friends could still sing "Happy Birthday to You". Voices are almost the only things that are not changed by being weightless. Everything has almost no weight in space. This is because there is very little gravity in space.
Some astronauts feel sick for the first few days in space. This feeling usually goes away. Some astronauts feel as if they had a cold all the time. That's because without gravity the fluids in their bodies move toward their heads. Astronauts look a little different in space. More blood flows to the face, so their faces look a little fatter. For the same reason, their waists get smaller and their chests get bigger.
Astronauts grow one or two inches in space. That's because gravity is not pressing on the spine(脊柱). The spine relaxes and stretches. Back on the earth, astronauts shrink to their regular height. In space, bones and muscles get weaker. That's because muscles are not used as much as before and the bones lose mineral density. Besides, the heart becomes a little weaker.
Since everything has almost no weight in space, astronauts can lift heavy objects easily. They can even lift each other! However, it is harder to stay still in space than to move around. The only way to stop moving is to hold on to something. The space shuttle has handholds and foot loops. The astronauts can also tie themselves to a seat or a wall. There are pieces of Velcro to stick things in order to keep them from floating around.
根据短文内容,回答下列问题。每题答案不超过7个词。
1. What CAN'T be done if you celebrate your birthday in the shuttle?
Candles can't be lit.
2. How do some astronauts feel for the first few days in space?
They feel sick.
3. Why do astronauts' faces look fatter in space?
Because more blood flows to the face.
4. Which part(s) of an astronaut's body may grow weaker in space?
Bones, muscles and the heart.
5. What do you think of living in space?
It's not easy. /It's different from living on the earth. (答案不唯一，言之有理即可)
答案
回答问题
本文主要介绍了在太空失重状态下，航天员身体发生的一些变化以及可做的一些活动。
1. Candles can't be lit. 由第一段中“The candles could not be lit because astronauts must be very careful not to start a fire in the shuttle.”可知，在航天飞机上庆祝生日不能点燃蜡烛。
2. They feel sick. 由第二段中“Some astronauts feel sick for the first few days in space.”可知答案。
3. Because more blood flows to the face. 由第二段中“More blood flows to the face, so their faces look a little fatter.”可知答案。
4. Bones, muscles and the heart. 由第三段中“In space, bones and muscles get weaker ... Besides, the heart becomes a little weaker.”可知，在太空中，骨骼、肌肉和心脏会变弱。
5. It's not easy. /It's different from living on the earth. (答案不唯一，言之有理即可)
本文主要介绍了在太空失重状态下，航天员身体发生的一些变化以及可做的一些活动。
1. Candles can't be lit. 由第一段中“The candles could not be lit because astronauts must be very careful not to start a fire in the shuttle.”可知，在航天飞机上庆祝生日不能点燃蜡烛。
2. They feel sick. 由第二段中“Some astronauts feel sick for the first few days in space.”可知答案。
3. Because more blood flows to the face. 由第二段中“More blood flows to the face, so their faces look a little fatter.”可知答案。
4. Bones, muscles and the heart. 由第三段中“In space, bones and muscles get weaker ... Besides, the heart becomes a little weaker.”可知，在太空中，骨骼、肌肉和心脏会变弱。
5. It's not easy. /It's different from living on the earth. (答案不唯一，言之有理即可)
