| 21. | The survey covers a representative sample of the population ,ie people of all levels of society. |
| 这项调查涉及到社会各阶层的人士。
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| 22. | Farm workers make up only a small section of the population . |
| 农民只占人口的一小部分。
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| 23. | The news of the epidemic struck terror into the population . |
| 流行病蔓延的消息使居民感到恐慌。
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| 24. | A large proportion of the population is engaged in industrial employment. |
| 大部分人在产业部门工作。
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| 25. | London exceeds Glasgow in size and population . |
| 伦敦的面积和人口都超过格拉斯哥。
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| 26. | The population contains a high ratio of old people. |
| 人口中老年人比率很高。
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| 27. | The army retreated, and the fleeing civilian population brought up the rear. |
| 部队撤退了，逃难的老百姓跟在后面。
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| 28. | the mobility of the population . |
| 人口的流动性。
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| 29. | The population is leveling off in the area as a result of family planning. |
| 由于实行计划生育，这一地区的人口已趋稳定。
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| 30. | The town is fast increasing in population . |
| 该镇人口迅速增长。
|