大学英语四级阅读理解真题：2013年12月考试真题_大学英语阅读

　　D) Homing signals sent by the pilot before the crash.

　　59. Why was the black box redesigned in 1965?

　　A) New materials became available by that time.

　　B) Too much space was needed for its installation.

　　C) The early models often got damaged in the crash.

　　D) The early models didnt provide the needed data.

　　60. Why did the Federal Aviation Authority require the black boxes be painted orange or yellow?

　　A) To distinguish them from the color of the plane.

　　B) To caution people to handle them with care.

　　C) To make them easily identifiable.

　　D) To conform to international standards.

　　61. What do we know about the black boxes from Air France Flight 447?

　　A) There is still a good chance of their being recovered.

　　B) There is an urgent need for them to be restructured.

　　C) They have stopped sending homing signals.

　　D) They were destroyed somewhere near Brazil.

【大学英语四级阅读理解真题：2013年12月考试真题】相关文章：

1 23显示全文

大学英语阅读 最新: 四级阅读题答题技巧解析
2016-10-18; 考研英语阅读之要忍耐
2016-10-11; 考研英语阅读训练之旅行的益处
2016-10-11; 六级阅读“三遍法”
2016-10-08; 六级美文阅读解析:男人就是喜欢比老婆挣得多
2016-09-30; 六级美文阅读解析：不当工作狂就难攀职业高峰吗
2016-09-30

网友关注: Recalled in Taiwan, sold on mainland; Space dream on course after launch; Beijing set to expand its fleet of clean-energy taxis in trial project; CIA document release acknowledges Area 51; G8 leaders seek deal to curb tax evasion; 10种方式表明他真的爱你; Summer classes open up a world of new learning; Hard line for cement plants that foul the environment; Cameron proud, police ready as G8 approaches; One-third of US marriages start online