12．As space science develops，man has learned more and more about space．Space is not only amazing but also dangerous．While working in space，spacemen are facing danger as well as success．
Scientists have found out that radiation（輻射）is the greatest danger to spacemen in space．When spacemen are working in space，they are in danger of radiation from the sun and other stars，which is bad for their health．The damage（危害）done by radiation won't be discovered until their children or ever grandchildren are born．Some special medicine may work a little，but no really helpful medicine has been found so far．
Space junk（垃圾） is also thought a great danger go spacemen．It's reported that there are 9，000man-made things flying in space．About 30% of these are satellites（衛星），10% are spaceships，and the rest are space junk．An explosion（爆炸） in 1996made a cloud of 300，000 fragments，each at least 4mm in size，and even a small piece of these knocked against a spaceship window and did some damage．Scientists are watching and reporting any possible danger all the time．They are working on helpful ways to do with space junk．
Although space is really dangerous，it interests everyone on the earth．In the near future，it may become usual for people to spend a few days in a space hotel．We may even choose to leave the earth and live in space in a few years．So we should care for space and do something to help improve the space environment．
根據短文內容選擇最佳答案
61．Space junk and radiation in space are dangerous toA．
A．spacemen working in space
B．people only on the earth
C．all the people except children
D．all the animals
62．The underlined word"fragments"means"A"．
A．碎片
B．泡沫
C．煙霧
D．粒子
63．C shows the man-made things in space in the correct way．
A．Teachers
B．Spacemen
C．Scientists
D．Fragments
64．Which of the following about the passage is TRUE？A
A．The passage tells us that radiation in space comes from the sun and other stars．
B．Every one of us can make a trip to space now．
C．Scientists have found out ways to solve any problem in space．
D．We can do nothing to help improve the space environment．
65．The best title of the passage is．B
A．SPACE RADIATION
B．SPACE DANGER
C．SPACE JUNK
D．SPACEMEN．
分析 文章大意：這是一篇科普知識閱讀，主要介紹太空中宇航員所面對的危險．第一種是輻射，輻射是對太空中的宇航員最大的危害，這種危害會在后代身上體現．直到今天還沒有研究出有效的藥物來防止或治療輻射．第二種是太空垃圾．目前太空中大約有9000件人造物體，其中30%為衛星，10%是宇宙飛船，剩馀的則都為宇宙垃圾．只要一小片垃圾就可以打破宇宙飛船的窗戶，危害宇航員的生命，因此用要為改善宇宙環境而努力．
解答 61．答案：A．細節理解題．根據第二段第一句Scientists have found out that radiation（輻射）is the greatest danger to spacemen in space科學家們已經發現輻射是空間里最大的危險．第三段第一句Space junk（垃圾） is also thought a great danger go spacemen．太空垃圾也被認為有很大的危險對于去太空的人．可知，太空垃圾和輻射對在太空工作的宇航員是危險的．選A．
62．答案：A．詞意猜測題．根據下句each at least 4mm in size每個至少4毫米大小．可知，應該是碎片．選A．
63．答案：C．細節理解題．根據第三段Scientists are watching and reporting any possible danger all the time．They are working on helpful ways to do with space junk．科學家們一直在觀察和報告任何可能的危險，他們正在研究如何處理太空垃圾．可知，科學家以正確的方式在太空中展示人造的東西．選C．
64．答案：A．推理判斷題．根據第二段第一行When spacemen are working in space，they are in danger of radiation from the sun and other stars，which is bad for their health．當宇航員是在太空中工作，他們在來自太陽和其他恒星的危險的輻射中，這對他們的健康是不好的．可知，A選項"這篇文章告訴我們太空中的輻射來自太陽和其他恒星．"是正確的．選A．
65．答案：B．標題猜測題．根據根據第二段第一句Scientists have found out that radiation（輻射）is the greatest danger to spacemen in space科學家們已經發現輻射是空間里最大的危險．第三段第一句Space junk（垃圾） is also thought a great danger go spacemen．太空垃圾也被認為有很大的危險對于去太空的人．可知，短文主要講太空中的危險．選B．
點評 閱讀題型，要注重句子與句子之間、段落與段落之間邏輯關系以及對篇章的整體理解．根據所給問題選擇正確選項完成試題．
