题目内容

23. The rule of the game is that the tied players get one more turn, andgets the highest score wins.

A. whoever
B. whatever
C. whichever
D. wherever

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24. Theof predator species and prey species is 1:5 in this park, which is an ideal balance in ecological communities.

A. pace
B. speed
C. ratio
D. rate

25. The world’s population is aging. It is estimated that the people aged 60 or over will15% of the entire population by 2020.

A. consist
B. comprise
C. compose
D. include

26. He is planning another tour abroad, yet his passport willat the end of this month.

A. die
B. deadline
C. block
D. expire

27. Unemployment was the chief cause of.

A. property
B. poverty
C. wealth
D. fortune

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