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标题: 四级练习2014.01.02 [打印本页]

作者: Rebecca949    时间: 2014-1-3 10:43     标题: 四级练习2014.01.02

[audio]http://sound.yywz123.com/tingbbs/cet4/cet420140102.mp3[/audio]



For thousands of years, people accepted challenges. Today we still have many (1)___________________ahead of us. Medical science faces the challenges of (2)____________________ which still attack human beings. Engineers and planners must build new cities and new kinds of transportation. (3)______________________________And many of us are interested in the challenge of space. We actually live in an age of challenge.





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