【正确答案】 B

【答案解析】[听力原文]
Scientists say they can tell what air and sea conditions were like hundreds of thousands of years ago. They say pieces of ice taken from Greenland provide such information. Scientists took the ice from more than 15 miles deep in huge masses of ice that float on the sea. The ice represents 25,000 years of history. It provides one of the clearest records of ancient weather. European and American scientific teams have been studying ice from the same area to confirm each other"s findings. They measured the oxygen and carbon dioxide in the ice for the temperature. From these measurements, the scientific teams say that the past 10,000 years is the only period during which temperature has not changed very much.

What information does the ice from Greenland give?

[解析] 选项表明，本题可能考查某生物生存所必需的外界条件。新闻中提到，冰川提供了一个最清楚的古气候记录，故答案为B。

【正确答案】 C

【答案解析】[听力原文]

Why are there two teams to study the same ice?

[解析] 选项均为以because开头的句子表明，本题可能考查某事发生的原因。新闻中提到，欧洲和美国的科学小组一直在研究同一地区的冰以确认彼此的研究结果，故答案为C。

【正确答案】 D

【答案解析】[听力原文]

What can be inferred from the measurements about the past 20,000 years?

[解析] 选项均为以the weather must have been/had开头的句子表明，本题可能考查过去某时期的气候状况。新闻末尾提到，科学团队称，根据这些测量，过去的10000年是温度并没有太大变化的唯一时期。由此可知，过去的20000年来，气候有很大的变化，故答案为D。