高级视听说1-7参考答案.doc

Unit One

1、About half of the total .

2、For lumber ,pulp and fuel.

3、The productivity of land begins to decrease .

4、Almost half is gone ・

5、50 to 60 years .

6、They begin to plant crops .

7、It costs money .

8、It is completely inaccessible .

9、After suffering devastating floods .

10、Enough trees to cut and enough trees in forest.

Unit Two

1、Tiger ,rhinoceros ,blue whale ,giant panda .

2、Five.

3、The whole web of life will be destroyed .

4、The web of life on the planet.

5、The causes were unavoidable .

6、This one is caused by human beings .

7、Our life support system .

8、Double the protected land .

Unit Three

1、Cheap but they pollute the air.

2、800 billion.

3、Cost.

4、Wind energy.

5、Converts the sunlight directly into electricity .

6、Conserve and plan .

7、Different but very good way of living , cool and heat.

8、Clean ,no emissions and no pollution .

9、Safe to store and cheap .

10、Technology to make it more affordable ,and will to make it happen.

Unit Four

1、Fossilized fuel.

2、Abundant than ever.

3、Wasting of resources .

4、Climate change ,unbreathable air .

5、Water.

6、Close link.

7、Droughts and famines .

8、The Canadian environmentalists .

9、The humans .

10、Drip hoses

Unit Five

1、Poise and confidence .

2、Cities.

3、Skeptical ・

4、Many sons .

5、The husband's family .

6、Skewed ratio of boys to girls ・

7、A nationwide insurance and pension system .

8、Six.

9、Move into a retirement home .

10、Abandonment by their parents .

Unit Six

1、The Great Within , Zi Jin Cheng .

2、Sons of Heaven.

3、Jian Wen ,the nephew of Yong-le .

4、40 miles.

5、10,000.

6、Dragon.

7、The Hall of Heavenly Purity .

8、Squander them in indulgence and corruption .

9、Pay their respects to monumental past.

Unit Seven

1、100 years.

2、She is glad to live to see this day .

3、To highlight progress in civil rights .

4、695 million dollars .

5、Because of the opposition of many Republicans .

6、He is against the expansion of hate crimes legislation .

7、Many criminals may go free .

8、Many cases that need to be prosecuted can't be prosecuted.

9、The passage of a new hate crimes law .

10、In less than two weeks .