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11 Since ancient times people have found various ways to preserve meat.

A eat B cook

C freeze D keep

12 We packed up the things we had accumulated (积累) over the last, three years and left.

A late B recent

C past D final

13 The expedition reached the summit at 10:30 that morning.

A bottom of the mountain B foot of the mountain

C top of the mountain D starting point

14 There is always excitement at the Olympic Games when an athlete breaks a previous record of performance.

A beats B destroys

C maintains D defends

15 The president proposed that we should bring the meeting to a close.

A stated B said

C suggested D announced

参考答案:11. D 12. C 13. C 14. A 15. C