三、(2025·大庆改编)句子还原
KEY→P11
范畴:人与自然
主题:动物行为
体裁:说明文
难度:★★★
建议用时:5分钟
评价:/5
根据短文内容,从方框中选出适当的选项填入文中空缺处,使短文内容通顺完整。(有两项多余)
Why do fish travel in schools(群)?
Have you ever seen fish swimming together in a school? It's quite an amazing sight! They move together, turning and changing directions at the same time. It makes you wonder: 1. In fact, the answer is no. Each fish finds its own direction. Researchers George Lauder and Yangfan Zhang from Harvard University have studied this for a long time. Now, they have discovered that fish can save a lot of energy by schooling.

In the experiment, the two researchers put the giant danio(大斑马鱼), a fish that likes to swim in schools, in a tank(水箱). 2. Other times, they put just one fish in. As we all know, by measuring(测量) how much $\ce{O_{2}}$ people use when exercising, we can know how much energy people use. The method also goes for fish. 3.
The results were interesting and clear. Schooling fish used less $\ce{O_{2}}$ than those swimming alone. And they took less time to become energetic again. 4. The researchers repeated this experiment five times to make sure the results were right. By schooling, fish can save energy for other important things, says Frank Fish from West Chester University. 5. For adults, they can use the saved energy to have babies or to stay away from animals that want to eat them.
So, next time you see fish swimming in schools, you'll know it's not just a beautiful sight—it's also a smart living skill for them.
英语嗨吧
A. Why do they swim in a school?
B. Is there anyone directing them how to move?
C. Adult fish in a school are not afraid of anything.
D. In other words, they were full of energy in a shorter time.
E. Sometimes, the researchers put eight fish in the tank at a time.
F. For example, young fish can put the saved energy into growth.
G. So researchers used a special machine to measure how much $\ce{O_{2}}$ fish used when swimming.

句子还原
本文主要介绍鱼为何会成群游动。
1. B 根据“It makes you wonder: ... In fact, the answer is no. Each fish finds its own direction.”可知，鱼群同步游动令人好奇，空处提出一个疑问。后文直接否定：“事实上，答案是否定的。每条鱼自己找方向。”选项B“有专人指挥它们如何行动吗？”符合语境。
2. E 根据“In the experiment, the two researchers put the giant danio, a fish that likes to swim in schools, in a tank. ... Other times, they put just one fish in.”可知，此处描述研究过程，补充“有时”的细节，与“其他时间只放一条鱼”形成对比。选项E“有时，研究人员一次性将八条鱼放入水箱中。”符合语境。
3. G 根据“As we all know, by measuring how much $\ce{O_{2}}$ people use when exercising, we can know how much energy people use. The method also goes for fish.”可知，通过测量人们在运动时消耗的氧气量，我们就能知道他们消耗了多少能量。这种方法同样适用于鱼类。选项G“因此，研究人员使用了一台特殊的仪器来测量鱼在游动时消耗的氧气量。”符合语境。
4. D 根据“And they took less time to become energetic again.”可知，它们恢复精力所需的时间也更短了。选项D“换句话说，它们在更短的时间内就充满了活力。”符合语境。
5. F 根据“For adults, they can use the saved energy to have babies or to stay away from animals that want to eat them.”可知，鱼群可节省能量用于重要事情，后文具体说成年鱼用于繁殖或逃避捕食者。选项F“例如，幼鱼可以把储存的能量用于生长。”符合语境。