人教版九年级下册英语Unit 13 Section A长江作业本答案-查字典英语网
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人教版九年级下册英语Unit 13 Section A长江作业本答案

查字典英语网 2017-04-18

1 Unit 13 Section A第一题答案

最佳答案:

  1、water pollution,air pollution,waste pollution,noise pollution

  2、(1) am/is/are+现在分词构成

  (2) have/has+动词的过去分词

  (3)助动词be+及物动词的过去分词

  (4)情态动词+be+及物动词的过去分词

2 Unit 13 Section A第二题答案

最佳答案:

  Ⅰ、

  1、used to do

  2、play a part in

  3、cut down air pollution

  4、instead of

  5、keep public places clean

  Ⅱ、

  678910DCDCBⅢ、

  11、What;to do

  12、didn't there

  13、Is;anything

  14、was painted

  15、took a bus

3 Unit 13 Section A第三题答案

最佳答案:

  Ⅰ、

  1、hear of

  2、cut off

  3、so far

  4、be harmful to

  5、not only. . . but also. . .

  6、bring danger to

  7、the number of

  8、no longer

  Ⅱ、

  9、NVithout;no longer

  10、drop too low;ocean life

  11、So far;have shown

  12、taken part in

  13、heard of

  Ⅲ、

  14、The place was not only cold, but also humid

  15、We can't afford to go abroad this summer.

  16、The number of students in this class is 50.

  17、I understood this sentence by asking my/the teacher for help.

  18、Smoking too much is harmful to his health.

  19、We should ride our bikes or walk to school instead of driving.


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