The research is still ongoing,and more is being learned about the impact of fish hatcheries on the natural population and what can be done to minimize the negative effects.With an increase in the awareness of the effects of hatcheries on the natural population,more steps can be taken to reduce this impact and the conservation efforts will improve.

　　【语篇导读】本文是科普阅读。介绍濒临灭绝鱼类的人工孵化,通过孵化可以增加它们的数量,避免灭绝。

　　5.What is the main purpose of fish hatcheries?

　　A.To increase fish numbers for commercial use.

　　B.To raise people’s awareness of endangered fish.

　　C.To increase the numbers of endangered fish species.

　　D.To help endangered fish survive in the wild.

　　答案:C

　　解析:细节理解题。从文章第一段最后一句可知,人工孵化是通过增加濒临灭绝鱼类的数量,避免它们灭绝。

　　6.What do we know about fish produced from augmentation program?

　　A.They are usually released into the wild.

　　B.They become the brood stock for the next generation.

　　C.They are mixed with the wild population.

　　D.They are used to improve genetic pool.

　　答案:B

　　解析:细节理解题。从文章第二段的“generally the fish that are reared in the hatchery become the brood(一窝) stock for the next generation”可知,增量项目孵化的鱼是作为下一代种鱼来储存。

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