What did the team with NOAA and Sea Grant aim to do at the National Press Club in 2002? Why are sharks important in the ecologi

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问题 What did the team with NOAA and Sea Grant aim to do at the National Press Club in 2002?
Why are sharks important in the ecological balance and health of the oceans?

选项 A、They are apex carnivores and reduced in numbers.
B、They are killed and few in numbers.
C、They are certain species that grow slowly.
D、They are flesh-eating animals and kill other sea creatures.

答案A

解析

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What did the team with NOAA and Sea Grant aim to do at the National Press Club in 2002? Why are sharks important in the ecologi

公共英语五级笔试

公共英语（PETS）

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GoalofAmericanEducationEducationisallenormousandexpensivepartofAmericanlife.Itssizeismatchedbyitsvariety.

ModerateEarthquakeStrikesEnglandAmoderateearthquakestruckpartsofsoutheastEnglandon28April2007,topplingchimn

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