Theearthwasjust
問題詳情:
The earth was just ___41___ cloud of dust after the “Big Bang”.The earth exploded loudly with fire and rock.___42___ were in time to produce many things,which were to make the earth’s atmosphere. As the earth cooled down,water began to appear on ___43___surface. It allowed the earth to dissolve ___44___(harm)gases. Then life began to develop.
Small plants multiplied and filled the first oceans and seas with oxygen. This encouraged the ___45___ (develop)of early shellfish and fish. Land animals such____46____insects,reptiles and dinosaurs appeared after green plants appeared. Small clever animals spread all ___47___ the earth. They are putting too much carbon dioxide into the atmosphere,___48___ prevents heat from escaping from the earth into space.____49____life will continue on the earth for millions of years to come will depend on whether this problem can____50____ (solve).
【回答】
41. a 42. They
43. its 44. harmful
45. development
46. as 47. over
48. which 49. Whether
50. be solved
知識點:語法填空
題型:未分類