Question

【题目】

Have you ever owned a pet goldfish? If you have watched your goldfish for any length of time, you know that they get plenty of __________. They are always swimming around. Fish surely need some rest from time to time, don’t they?

In fact, they do! If you watch fish __________ enough, you’ll notice that they do take breaks. Fish sometimes stay in the same position in the water. It seems like they’re not in a trance (昏睡状态). But their eyes are open. So, are they sleeping?

The answer is “yes!” Fish __________ sleep at any time during the day or night. They sleep with their eyes open, __________ they don’t have eyelids (眼睑).

However, fish sleep is not exactly like human sleep. Most fish keep moving __________ when they’re sleeping. In this way, they can keep a proper oxygen (氧气) level in their bodies. Larger fish will swim at a slower speed when sleeping, while smaller fish might only be able to move their fins (鳍) at times.

【1】A.restB.exerciseC.sleepD.break

【2】A.longB.shortC.soonD.late

【3】A.mustB.shallC.shouldD.can

【4】A.soB.butC.becauseD.if

【5】A.evenB.justC.everD.only

Answer 1

【答案】

【1】B

【2】A

【3】D

【4】C

【5】A

【解析】

本文是一篇说明文。金鱼整天在水里游来游去，难道它们不睡觉吗？事实上，鱼可以在白天或晚上的任何时候睡觉。他们睁着眼睛睡觉，因为它们没有眼睑。鱼类的睡眠也并不完全像人类的睡眠。大多数鱼即使在睡觉的时候也在不停地游动。

【1】句意：如果你观察金鱼有一段时间了，你就会知道它们得到了足够的锻炼。

考查名词辨析。A. rest 休息；B. exercise锻炼；C. sleep 睡眠；D. break间断，休息。根据They are always swimming around.（他们总是到处游来游去）可知，金鱼得到了足够的锻炼，故选B。

【2】句意：如果你观察鱼的时间足够长，你会发现它们确实会休息。

考查形容词和副词辨析。A. long形容词，意为长的；B. short形容词，意为短的；C. soon副词，意为不久，很快，D. late形容词，晚的，迟到的。根据句意，只有观察的时间足够长。才能发现金鱼确实会休息，long enough（时间）足够长，故选A。

【3】句意：鱼可以在白天或晚上的任何时候睡觉。

考查情态动词辨析。A. must表示肯定的猜测，意为一定；B. shall用于一人称的肯定句表示允诺，强制，命令等语气；C. should表示应该；D. can可以，能够。根据句意可知，鱼在一天的任何时候都能够睡觉，故选D。

【4】句意：他们睁着眼睛睡觉，因为它们没有眼睑。

考查连词辨析。A. so（引出评论或问题）那么；B. but 表转折，但是；C. because表原因，因为；D. if表条件，如果。鱼没有眼睑是他们睁着眼睡觉的原因，故选C。

【5】句意：大多数鱼甚至在睡觉的时候也在不停地游动。

考查副词辨析。A. even甚至；连；B. just 只是；恰好；C. ever从来；曾经；D. only仅仅；只。根据However, fish sleep is not exactly like human sleep.可知，鱼的睡眠和人类的有所不同，鱼即使在睡觉时也在不停的游动，故选A。