What does the passage mainly discuss? Why are otters and mussel shells included in the discussion in paragraph 3?

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问题 What does the passage mainly discuss?
Why are otters and mussel shells included in the discussion in paragraph 3?

选项 A、To provide an example of tool use among animals
B、To prove that certain species demonstrate greater ability in tool use than other species
C、The information can not be found by all means
D、None of the above

答案A

解析

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托福（TOEFL）

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What does the passage mainly discuss? Why are otters and mussel shells included in the discussion in paragraph 3?

托福（TOEFL）

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ReadthetextbelowandanswerQuestions28-40.BattleoftheBagTheworldhasdeclaredwaronthe

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A、Heenjoyslookingattheflowers.B、Hethinkstheparkisboring.C、Hedoesnotlikewalkingwiththewoman.D、Hedoesnotsee

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被告人高某在5月14日接到一审判决书，在5月17日向第二审法院提出上诉，在5月25日撤回上诉。下列说法正确的是()

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