根据要求完成下列各小题。

①__________

THE Earth is about 4,600 million years old．Many of the things that we have done are good, but many more are not good for the Earth．

Pollution is ②（地球上的一种严重问题）．In big cities cars and buses have polluted the air．Many people in cities now have very bad health problems．

③（工厂也对土地和水造成了污染）．As a result, many rivers and lakes are now polluted．

All over the world, people have cut down millions and millions of trees．Did you know many kinds of animals and plants are now disappearing （消失)? In particular, trees are very important ④because they produce oxygen （氧气）and control the climate．

Now, many people are beginning to take these problems seriously．They are making wind generators （发动机）and planting new trees．There is a group in our class that picks up the garbage at school．Whether the weather is hot or cold we always do it．⑤I think we are setting a good example to everyone else．

I hope, in the future, the sky can be clearer, the water cleaner, and the land greener．Then both people and animals can have a greener Earth．

1．请在①出给出文章的题目。

2．请把②的汉语翻译成英语。

3．请把③的英语翻译成汉语。

4．请把④的画线部分翻译成汉语。

5．请把⑤的画线句子翻译成汉语。

As everyone knows, there are many 　16　 of transportation in the world, like bicycles, buses, ships, trains and 　17　 .

If you are in big  18　like Shanghai or Beijing, maybe you get to school   19  a subway or you have to 　20　 to school because you live in a mountain village. Here I am just trying to say something about　21　 .

Ten years　22　, bicycles were very　23　in most villages.  24　 family had one or two of bicycles. Children got to school by bicycle; 　25　 rode bicycles to go shopping. Then motorcycles (摩托车)   26  to become popular. People no longer rode bicycles because motorcycles ran   27  faster.  But now, in some countries，bicycles are highly suggested

  28  the main means of transportation. They think buses, cars and motorcycles pollute(污染) the air but bicycles   29  . So, to live a low-carbon life,   30  a bike is a good way.

As everyone knows, there are many 　31　 of transportation in the world, like bicycles, buses, ships, trains and 　32　 .
　 If you are in big 33　like Shanghai or Beijing, maybe you get to school 34　 subway; or you have to 　35　 to school because you live in a mountain village. Here I am just trying to say something about　36　 .
　 Ten years　37　, bicycles were very　38　in most villages.　39　 family had one or two of bicycles. Children got to school by bicycle; women　40　bicycles to go shopping. Then motorcycles (摩托车)　 41　 to become popular. People no longer rode bicycles because motorcycles ran much　 42　 .But now, in some countries bicycles are highly suggested　 43　 the main means of transportation. They think buses, cars and motorcycles pollute(污染) the air but bicycles　 44　 . So, to live a low-carbon life, riding a bike is a good　 45　 .
31. A. kind　　　　　　　　　 B. kinds　　　　　　　　　　　 C. mean　　　　　　　　　　　 D. way
32. A. other　　　　　　　　　　　　 B. others　　　　　　　　　　 C. the other　　　　　　　　 D. another
33. A. cities　　　 　　　　　 B. countries　　　　　　　　 C. villages　　　　　　　　　　 D. countryside
34. A. on　　　　　 　　　　 B. by　　　　　　　　　　　　　 C. in　　　 　　　　　　　　　 D. of
35. A. on foot　　　　 　　 B. walk　　　 　　　　　　　　 C. walks　　　 　　　　　　　 D. runs
36. A. bicycles　　　　　　 B. motorcycles　　　　　　 C. buses　　　　 　　　　　 D. cars
37. A. later　　　　　　　　　 B. before　　　　　　　　　　 C. ago　　　　　　　　　　　　 D. after
38. A. cheap B. important C. expensive D. popular
39. A. All　　　 　　　　　　 B. Both　　　 　　　　　　　　 C. Every 　　　 　　　　　　 D. Most
40. A. rode　　　 　　　　　 B. ride　　　　　　　　　　　　 C. rided　　　　　　　　　　　 D. rides
41. A. begin　　　　　　　　　　　　 B. began　　　　 　　　　　 C. begun　　　　 　　　　　 D. start
42. A.fast　　　　　 　　　　 B. faster　　　 　　　　　　　 C. slow　　　　　　　　　　　 D. slower
43. A. for　　　 　　　　　　 B. in　 　　　　 　　　　　　　　　　 C. at　　　　　　 　　　　　　　　　　 D. as
44. A. not　　　　　 　　　　 B. don’t　　　　 　　　　　　 C. doesn’t 　　　　　　　　　 D. didn’t
45. A. way　　　 　　　　　 B. road　　　　　　　　　　　　　　　 C. route　　　　 　　　　　　　　　 D. kind