2020年下半年英语四级听力真题原文及答案：听力篇章（三）

全国大学英语四级听力理解部分由短篇新闻、长对话和听力篇章构成。试题采用选择题（单选题）题型。听力理解部分的分值比例为35%，其中短篇新闻占7%，长对话占8%，听力篇章占20%。考试时间约25分钟。以下是希赛网英语四六级频道为大家搜集整理的2020年12月英语四级听力真题及参考答案。

Section C

Passage 3

Thanks to the International Space Station we know quite a bit about the effects of low gravity on the human body, but NASA scientists want to learn more. To that end, they have been studying how other species deal with low gravity, specifically focusing on mice(22). The results are both interesting and humorous.

The scientists first send some mice in a specially designed cage to the International Space Station. The cage allowed them to study the behavior of the mice remotely from Earth via video. As you noticed in the video, the mice definitely seem uncomfortable at the beginning of the experiment. They move around clumsily, drifting within the small confines of the cage and do their best to figure out which way is up, but without success. (23)However, it’s not long before the mice begin to catch on. They adapt remarkably well to their new environment and even using the lack of gravity to their advantage as they push themselves around the cage.

That’s when things really get wild. The 11th day of the experiment shows the mice are not just dealing with the gravity change but actually seem to be enjoying it. (24) Several of the mice are observed running around the cage walls.

The scientists wanted to see whether the mice would continue doing the same kinds of activities they were observed doing on Earth. The study showed that the mice kept much of their routines intact, including cleaning themselves and eating when hungry. (25)

Q22 What do NASA scientists want to learn about?

【答案】[D]. How animals deal with lack of gravity.

Q23 What does the passage say about the mice at the beginning of the experiment?

【答案】[A]. They were not used to the low- gravity environment.

Q24 What was observed about the mice on the 11th day of the experiment?

【答案】[C]. They already felt at home in the new environment.

Q25 What did the scientists find about the mice from the experiment?

【答案】[B]. They behaved as if they were on Earth.