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C
As more countries and companies send satellites into space, space is becoming more and more crowded. Today, thousands of man-made satellites, old rockets and broken pieces move around the earth. These objects are called “space junk”. They travel at a very high speed, so even a small piece can destroy a working satellite.
To stop dangerous accidents, scientists and engineers are developing space traffic management. It is like traffic rules in the sky. Just as drivers must follow road rules, satellites also need clear rules to follow in space. Governments and organizations are working together to record every object, predict possible crashes（碰撞）and tell satellite controllers to move their satellites in time. Some new technologies are also helpful. Smart satellites can change the direction by themselves when they find something nearby. Broken satellites will be guided into safe areas so that they no longer trouble others.
However, space traffic management still faces many difficulties. Not every country follows the same rules, and old space junk is hard to clean up. But if people keep obeying rules and improving technology, space can remain a safe and useful place for everyone.
根据材料内容选择最佳答案。
(
A. Living things in space.
B. Satellites that are still working well.
C. Man-made satellites and old rockets.
D. Rocks and natural stars around the earth.
(
A. Because it is too heavy to move.
B. Because it travels at a very high speed.
C. Because it can produce much rubbish.
D. Because it can pollute the air on the earth.
(
A. Traffic rules on the road.
B. Satellite control rooms.
C. Car factories on the earth.
D. Airplane traffic in the sky.
(
A. They can break space junk into small pieces.
B. They can clean up old rockets quickly.
C. They can change the direction by themselves.
D. They can ask people on the earth for help at once.
(
A. Space traffic management is perfect already.
B. All countries have the same rules for space.
C. It is easy to clean up all space junk now.
D. Space safety still needs continuous efforts.
As more countries and companies send satellites into space, space is becoming more and more crowded. Today, thousands of man-made satellites, old rockets and broken pieces move around the earth. These objects are called “space junk”. They travel at a very high speed, so even a small piece can destroy a working satellite.
To stop dangerous accidents, scientists and engineers are developing space traffic management. It is like traffic rules in the sky. Just as drivers must follow road rules, satellites also need clear rules to follow in space. Governments and organizations are working together to record every object, predict possible crashes（碰撞）and tell satellite controllers to move their satellites in time. Some new technologies are also helpful. Smart satellites can change the direction by themselves when they find something nearby. Broken satellites will be guided into safe areas so that they no longer trouble others.
However, space traffic management still faces many difficulties. Not every country follows the same rules, and old space junk is hard to clean up. But if people keep obeying rules and improving technology, space can remain a safe and useful place for everyone.
根据材料内容选择最佳答案。
(
C
)11. What is space junk according to the passage?A. Living things in space.
B. Satellites that are still working well.
C. Man-made satellites and old rockets.
D. Rocks and natural stars around the earth.
(
B
)12. Why is space junk so dangerous?A. Because it is too heavy to move.
B. Because it travels at a very high speed.
C. Because it can produce much rubbish.
D. Because it can pollute the air on the earth.
(
A
)13. What is space traffic management compared to in the passage?A. Traffic rules on the road.
B. Satellite control rooms.
C. Car factories on the earth.
D. Airplane traffic in the sky.
(
C
)14. What can smart satellites do to avoid dangers?A. They can break space junk into small pieces.
B. They can clean up old rockets quickly.
C. They can change the direction by themselves.
D. They can ask people on the earth for help at once.
(
D
)15. What can we guess from the last paragraph?A. Space traffic management is perfect already.
B. All countries have the same rules for space.
C. It is easy to clean up all space junk now.
D. Space safety still needs continuous efforts.
答案
11. C 由第一段可知，太空垃圾包括人造卫星、旧火箭和破碎零件。
12. B 由第一段可知，太空垃圾危险是因为速度非常快。
13. A 14. C 15. D
12. B 由第一段可知，太空垃圾危险是因为速度非常快。
13. A 14. C 15. D
解析
【分析】
本题为英语阅读理解题，需根据原文内容逐一分析每个问题：11题定位第一段查找“太空垃圾”的定义；12题定位第一段找太空垃圾危险的原因；13题定位第二段找太空交通管理的类比对象；14题定位第二段找智能卫星的避险功能；15题分析最后一段内容推断合理结论，匹配对应选项。
【解析】
11题：根据第一段“Today, thousands of man-made satellites, old rockets and broken pieces move around the earth. These objects are called “space junk”.”可知，太空垃圾包括人造卫星、旧火箭等，故选C；
12题：根据第一段“They travel at a very high speed, so even a small piece can destroy a working satellite.”可知，太空垃圾危险是因为速度极快，故选B；
13题：根据第二段“It is like traffic rules in the sky.”可知，太空交通管理被比作空中的交通规则，对应选项A（路上的交通规则），故选A；
14题：根据第二段“Smart satellites can change the direction by themselves when they find something nearby.”可知，智能卫星可自行改变方向避险，故选C；
15题：最后一段指出太空交通管理仍面临诸多困难，需要各国遵守规则、改进技术，可推断太空安全仍需持续努力，故选D。
【答案】
11.C 12.B 13.A 14.C 15.D
【知识点】
英语阅读理解、细节理解、推理判断
【点评】
本题围绕太空垃圾与太空交通管理展开，考查学生快速定位原文信息、细节理解及推理判断的能力，题目设置基础，准确抓取原文对应内容即可解答。
【难度系数】
0.7
本题为英语阅读理解题，需根据原文内容逐一分析每个问题：11题定位第一段查找“太空垃圾”的定义；12题定位第一段找太空垃圾危险的原因；13题定位第二段找太空交通管理的类比对象；14题定位第二段找智能卫星的避险功能；15题分析最后一段内容推断合理结论，匹配对应选项。
【解析】
11题：根据第一段“Today, thousands of man-made satellites, old rockets and broken pieces move around the earth. These objects are called “space junk”.”可知，太空垃圾包括人造卫星、旧火箭等，故选C；
12题：根据第一段“They travel at a very high speed, so even a small piece can destroy a working satellite.”可知，太空垃圾危险是因为速度极快，故选B；
13题：根据第二段“It is like traffic rules in the sky.”可知，太空交通管理被比作空中的交通规则，对应选项A（路上的交通规则），故选A；
14题：根据第二段“Smart satellites can change the direction by themselves when they find something nearby.”可知，智能卫星可自行改变方向避险，故选C；
15题：最后一段指出太空交通管理仍面临诸多困难，需要各国遵守规则、改进技术，可推断太空安全仍需持续努力，故选D。
【答案】
11.C 12.B 13.A 14.C 15.D
【知识点】
英语阅读理解、细节理解、推理判断
【点评】
本题围绕太空垃圾与太空交通管理展开，考查学生快速定位原文信息、细节理解及推理判断的能力，题目设置基础，准确抓取原文对应内容即可解答。
【难度系数】
0.7
