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　　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.

　　答案句：To that end, they have been studying how other species deal with low gravity, specifically focusing on mice.

　　分析：原词复现，难度不大

　　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.

　　答案句：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.

　　分析：同义替换，not used to=seem uncomfortable, 且后文对uncomfortable有详细说明。

　　难度较大。

　　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.

　　答案句：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.

　　分析：同义替换，felt at home=seem to be enjoying it. 难度较大。

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

　　答案：B) They behaved as if they were on Earth.

　　答案句：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.

　　分析：同义替换，behaved as if they were on Earth = kept much of their routines intact.本题难度较大。

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