Today we can see that many people are cutting ___41___ the trees in the forests. A lot of rich land ___42__ become deserts(沙漠). If we __43  newspapers, we’ll learn that the forests on the earth are getting smaller   44  . We are cutting down large numbers of trees   45  we need wood and farmland. Some scientists say that there ____46___ be any great forests   47  20 or 30 years.

What will happen   48  the forests disappear? A lot of plants will die and the animals will   49  their home. In many places the new farmland will soon look____50____ the old deserts. Crops(莊稼) will not grow there. There won’t be enough  51  , and the weather will get hot and dry. If the climate(氣候)of the earth changes, life will be  52  for everyone. Our living environment(環(huán)境) will become  53 . More and more rich farmland will disappear(消失). We will suffer(遭受)a lot from both droughts(干旱) and floods.

It’s our duty___54___the forests well. Everyone should try his best to make a contribution(貢獻(xiàn)) to taking ___55___ of the forests. Stop cutting down the trees and make the world greener!

(  )41. A.down                B.up               C.off               D.of

(  )42. A.have             B. has              C.is                D.are

(  )43. A. look           B. see              C. read             D. watch

(  )44. A. on time B. all the time       C. in time D. no time

(  )45. A. or              B. so               C. because           D. but

(  )46. A.is               B.are               C. will not           D.have

(  )47. A. in               B. at              C. on              D. with

(  )48. A. and             B. that            C. but              D. if

(  )49. A. find B. build           C. lose D. decorate

(  )50. A. like              B.at                C.after             D.for

(  )51. A. snow           B. sunshine         C. wind             D. rain

(  )52. A. easy B. hard            C. happy          D. interesting

(  )53. A. better and better B. worse and worse

C. bigger and bigger D. more and more

(  )54.A. to do B. do C. to protect D. protect

(  )55. A. care             B.careful            C.careless           D.good

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