来源:中考网整合 2011-09-21 15:00:38
The population problem may be the 1 one of the world today. The world's population is growing 2 . Two thousand years ago, there were only 250 million people 3 the earth. Four hundred years ago, the number was 4 500 million. But at the beginning of the 5 century, the world's population was about 1,700 million.In 1970, this number was 3,600 million. In 1990, the number was five billion. A 6 report says that the world population will 7 six billion by the end of the 20th century. This is just ten 8 after it 9 five billion. People say that by the year 2010, 1 0 may be seven billion.
( )1.A.great B.greater C.greatest D.greating
( )2.A.faster and faster B.fast and fast
C.fastest and fastest D.faster and fast
( )3.A.in B.on C.at D.for
( )4.A.nearly B.more C.almost D.over
( )5.A.twenty B.twelve C.twentieth D.twelfth
( )6.A.USA B.UN C.PRC D.PLA
( )7.A.past B.pass C.passed D.passes
( )8.A.weeks B.months C.seasons D.years
( )9.A.get B.gets C.reached D.reach
( )10.A.this B.its C.one D.it
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