题目：Thepopulation problem may be the125one of the world today. The world’s population is growing126. Two thousand years ago, there were only 250 million people127the earth. Four hundred years ago, the number was128500 million. But at the beginning of the129century, the world’s population was about 1700 million. In 1970, this number was 3600 million. In 1990, the number was five billion. A130report says that the worldpopulation will131six billion by the end of the 20th century. This is just ten132after it133five billion. People say that by the year 2010,134may be seven billion.
A. ["greating","greater","greatest","great"]
B. ["fastest and fastest","fasterand faster","faster and fast","fast and fast"]
C. ["at","in","for","on"]
D. ["more","almost","over","close"]
E. ["twelfth","twelve","twentieth","twenty"]
F. ["PRC","USA","PLA","UN"]
G. ["passed","past","pass","passes"]
H. ["years","months","weeks","season"]
I. ["reach","gets","reached","get"]
J. ["it","its","one","this"]
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