托福TPO 8 听力Lecture第4篇第4题_What characteristic of element 43 might explain why the scientific community doubted the findings of Ida Tacke’s team?

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题目

What characteristic of element 43 might explain why the scientific community doubted the findings of Ida Tacke’s team?

Element 43 has a very fast rate of decay.

Element 43 always contains small amount of other elements.

Element 43 cannot be created artificially.

Element 43’s radioactivity makes it easy to isolate and measure.

题目解析

根据教授所说内容 “Hardly anyone believed that Tacke’d discovered a new element.” 可知，几乎没人相信 Tacke 发现了新元素。因为他们无法分离出足够多的 Masurium 作令人信服的样本。后来教授又说道 “Exactly, because of its radioactive decay, element 43 doesn’t last very long.” 由于 43 号元素会衰变，它不能长久存在，它会转变成其他元素。所以正是由于这种特性，科学界才会质疑 Ida Tacke 团队的发现。选项 A 正确。

答案: A

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