20．One night in February 1962，John H．Glenn．Jr．，flew over Australia．The man in the Mercury（水星）capsule（宇宙飛行容器）was alone，but friendly voices reached him by radio．On the dark land 100 miles below，he saw a sprinkling of light．They marked the city of Perth，where people had turned on their lights as a greeting to him．
In Friendship7，Glenn radioed，"The lights show up very well．Thank for everybody for turning them on．"His capsule raced on to the east．
During his three orbits of the earth，Glenn could always reach one of eighteen tracking stations．Some of them were on ship at sea．Others were in the United States．
Many of the stations had been built with the help of other countries．These countries allowed Americans to bring in radio equipment and set it up．Without the help of such lands as Nigeria（尼日利亞），Zanzibar（尚巴西，坦桑尼亞領土的一部分），and Mexico，there would have been breaks in the worldwide radio network．
John H．Glenn．Jr．，was the first America to orbit the earth．For his flight，the tracking network（跟蹤網(wǎng)絡） covered 60，000 route miles．Five hundred men worked in the stations along the route．Since his flight，the network has grown．Today，it covers more than 100，000 route miles and has about one hundred stations．One-third of these stations are outside of the United States．
16．This passage is mainly about．D
A．talking to ships at sea around the world
B．breaks in the worldwide network
C．a(chǎn) satellite which fell into the ocean
D．the first American to orbit the earth
17．From the passage we can see that．B
A．Friendship7 stopped in Perth，Australia
B．in space flight，radio equipment is important
C all tracking stations are inside the United States
D．many people could see Glenn in his capsule when he made the flight
18．During his flight Glenn could always．A
A．reach one of the tracking stations
B．see lights turned on on the ground
C．reach ships at sea
D．a(chǎn)rrive at Mercury in his Friendship7
19．Why did people in Perth turn on the lights？C
A．They wanted guide him to land．
B．It was too dark for them to see in the room．
C．They wanted to greet Glenn．
D．They wanted to see the Friendship7．
20．Which of the following is NOT TRUE？B
A．Countries work together to track satellites．
B．besides Glenn，nobody has orbited the earth．
C．There are now about 70tracking stations in the United States．
D．The tracking network covers many more route miles now than before．
分析 本文是一篇人物故事類閱讀．文章主要介紹了Glenn環(huán)繞地球時的事．Glenn是第一個進入地球軌道的美國人．
解答 16-20 DBACB
16．D．主旨大意題．縱覽全文并根據(jù)"One night in February 1962，John H．Glenn．Jr．，flew over Australia．The man in the Mercury（水星）capsule（宇宙飛行容器）was alone，but friendly voices reached him by radio．"可知本文主要介紹了第一個進入地球軌道的美國人．故選D．
17．B．細節(jié)理解題．根據(jù)"These countries allowed Americans to bring in radio equipment and set it up．Without the help of such lands as Nigeria（尼日利亞），Zanzibar（尚巴西，坦桑尼亞領土的一部分），and Mexico，there would have been breaks in the worldwide radio network．"可知在太空飛行，無線電設備很重要．故選B．
18．A．推理判斷題．根據(jù)"During his three orbits of the earth，Glenn could always reach one of eighteen tracking stations．"可知在飛行過程中Glenn可以一直到達追蹤站．故選A．
19．C．細節(jié)理解題．根據(jù)"On the dark land 100 miles below，he saw a sprinkling of light．They marked the city of Perth，where people had turned on their lights as a greeting to him．"可知珀斯的人開燈是為了問候Glenn．故選C．
20．B．推理判斷題．根據(jù)"One night in February 1962，John H．Glenn．Jr．，flew over Australia．The man in the Mercury（水星）capsule（宇宙飛行容器）was alone，but friendly voices reached him by radio．"可知文章只是說Glenn是第一個進入地球軌道的美國人．，并不是沒有其他人環(huán)繞地球，所以B選項是錯誤的．故選B．
點評 本文是一篇人物故事類閱讀．此類題型主要考查學生的細節(jié)理解和推理判斷能力．細節(jié)理解題是針對文中某個細節(jié)、某句話或某部分具體內(nèi)容設置問題，所以在做細節(jié)理解題時要結(jié)合原文和提干有針對性的找出相關語句進行仔細分析，再結(jié)合選項選出正確答案．在做推理判斷題時不要以個人的主觀想象代替文章的事實，要聯(lián)系上下文根據(jù)文章事實進行合乎邏輯的推理判斷．在做主旨大意題時考生首先要仔細閱讀短文，完整了解信息，準確把握作者觀點，確定主旨．
