21世纪大学英语第四册课后答案(全1-7单元)
鳄鱼连招
21世纪大学英语第四册课后习题答案（全1至7单元）
Unit one
我的低碳生活
TEXT A
II
1.He defines greatness as the lasting contribution which a person makes or has made to human civilization.
2.The example of Churchill shows the importance of persistence and dedication in achieving greatness.
3.Firstborns and only children tend to make good leaders in times of crisis, but middle- born children are better peacetime leaders.
4.A 20th century politician should be an effective public speaker and a social person.
5.Intelligence ems to be less important than other factors, such as the ability to communicate effectively.
6.The ability to overcome traditional ways of thinking is also crucial.
7.They simply don’t devote the amount of time required.
向日葵妈妈8.The study showed that enjoying one’s work is the best form of motivation.
IV
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1.chat 2.acknowledge 3.motivated 4.charcteristic
5.despite 6.influential 7.cited 8.obstacle
9.intrinsic 10.criteria 11.obssion 12.innate
13.contribution(s) 14.contemporary 15.submitted 16.morale
V
1.left behind 2.ri above 3.made history 4.were endowed with颤抖着
5.put up with 6.going nowhere 7.focus on 8.built upon
9.put in 10.come up with 11.take charge apart
VI
efficiency emergency fluency frequency
proficiency tendency urgency sufficiency
1.fluency 2.proficiency 3.emergency 4.Efficiency
5.tendency 6.frequency
VII
1.For some students, it's not that they don't put in enough time — it's that they don't have good study habits.
2.Children perform differently at school. It's not that they have different IQs — it's that they are brought up in different environments.
3.The company is not very productive. It's not that its staff aren't talented — it's that their energy hasn't been channeled effectively.
4.I'm really sorry. It's not that I don't want to go to the cinema with you— it's that I have to finish my paper tonight.
5.You have a stomachache. It's not that the food was bad — it's probably that you have too much stress from your work.
VIII
1.President Wilson didn't try to bring the US back to economic and political isolatio
n. Instead, he believed in international cooperation through an association of nations. 2.Computers don't teach students in groups. Instead, they can help them learn effectively according to their different needs.
3.We shouldn't focus on minor points. Instead, we should try to solve the problem of the greatest urgency at prent.
4.He don't get anybody el to help him. Instead, he likes to attend to everything himlf. 宝宝吐奶怎么办
5.Teaching success shouldn't be measured by the scores the students receive on tests. Instead, it should be measured by whether the students have internalized the ability and desire to learn.
手脚冰凉吃什么药IX
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XI走出困惑
1.Americans tend to define people by the jobs they have/do. Such characteristics as their family and educational backgrounds are considered less important.
2.His uncompromising personality explains why he could no longer put up with his employer and eventually submitted his resignation.
3.If you really want to learn English well, you must put in a lot of time and energy, or you'll go nowhere. The same can be said of other subjects.
4.Some actors fame is built on their innate beauty, but despite his short stature, Dustin Hoffman ro above and it is his excellent acting that t him apart.
