单选题
The use of helium for deep-sea diving
A、
helped to overcome the physical discomforts the divers experienced when nitrogen was used.
B、
was found by Dr. Jeol Hiderbrand.
C、
is still universally acknowledged as standard practice up to now.
D、
all that is included in A, B, and C.
【正确答案】
D
【答案解析】
[解析] 本题考查对全文的综合理解。这是—道填充题。句子主语是“深海潜水中氦气的使用”,所提供的几个选项谓语[A]此陈述与原文第三段第一句话意义相符;[B]也是正确陈述。再看[C]与原文第三段最后—句含义一致;因此可见三项陈述都对。因此,[D]是正确的。
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