托福考试

根据网考网考试中心的统计分析，以下试题在2018/4/19日托福考试习题练习中，答错率较高，为：78%
【单选题】 Why are otters and mussel shells included in the discussion in paragraph 3
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．(
D．(

网考网参考答案：A，答错率：78%
网考网试题解析：
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