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Rebecca949 发表于 2012-8-13 10:41

四级练习2012.08.13

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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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杨飞飞儿 发表于 2012-8-14 14:14

1 challenges
2 ... many diseases
3 scientists must develop new forms of energy

zhant220 发表于 2012-8-14 14:29

1. challenges
2. conquering of many diseases
3. scientists must develop new forms of energy

jkm204 发表于 2012-8-14 18:55

challenges

conquering many diseases


scientists must develop  new forms of energy

r124532234 发表于 2012-8-26 15:07

challenges
conquaring many diseases'
scientiests must new forms of energy

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