What is Alvin? Which of the following statements is NOT a fact about Alvin?

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问题 What is Alvin?
Which of the following statements is NOT a fact about Alvin?

选项 A、It can carry explorers as deep as 6,500 meters.
B、It has played a key role in various important undersea expeditions
C、It was launched in the sixties of the twentieth century.
D、It has been used for more than 40 years.

答案A

解析 文章第一段从第三句开始说,科学家正在研制一艘可将研究人员带到6,500米深处的潜水装置,而它将替代Alvin,因为Alvin只能潜到4,500米深处。A不是事实,所以是正确选择。
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