50. What does the author imply by saying aquaculture

　　49 Why does the author say aquaculture is so important these days?　　A) It is a must for feeding the worl

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　　48 What does the author say about China in terms of aquatic food?　　A) It places increasing emphasis on fi

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　　47 What do we need to do if we keep consuming fish at the current rate?　　A) Increase the fishing volume

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　　46 What does the author say is remarkable about the fish we eat?　　A) They reproduce quickly 　　B) They ar

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　　45 Refusing a request is sometimes seen as a privilege not enjoyed by ordinary people 　　（本题出自2022年12月

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