托福考试

根据网考网考试中心的统计分析，以下试题在2019/3/1日托福考试习题练习中，答错率较高，为：68%
【单选题】
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Listen to a part of a discussion in a biology class.

What can be inferred about monarch butterfliesA．They are the most common butterflies in NorthAmericA、
B．Their population has been reduced because of herbicides.
C．They have lived on earth for several million years.
D．Their diets consists mainly of other butterflies.

网考网参考答案：B，答错率：68%
网考网试题解析：
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