题目内容
A. increase B. billion C. population D. reach E. Russia
1.the number of people who lives in a particular (特定的)area
2.one thousand million
3.get to ; arrive at
4.to become larger in amount (量,数量)or number
5.the largest country in the north of Europe , from which Russians come
1._________ 2.________ 3.________
4.________ 5.________
l.C 2. B 3. D 4. A 5.E
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