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B
With low temperatures and less and less food, winter is an uncomfortable season for animals. Many animals enter hibernation to get through it.
Hibernation is when an animal goes into a state of being inactive for a long time. Animals hide away from their enemies. Hibernation makes the animals' bodies cool and slows their heartbeat to just a few times per minute, for up to months at a time.
But why don't humans hibernate? Humans don't enter hibernation for many reasons. Our body is not designed for hibernation. Our ancestors were animals with no history of hibernating. For example, human waste is a huge problem for human hibernation. Animals are able to stop their waste. Unluckily, humans can't do this.
There are other problems. Body temperatures below $28°\mathrm{C}$ may bring a lot of trouble and cause aches. Low temperatures can also make people easier to be ill. In fact, humans don't need to sleep through winter. We have found fire, clothes, shelter, hunting and farming. These ways can help us keep away from the cold.
Could humans hibernate in the future? For long-distance(长途) space travel, it's possible. A journey to Mars would take around months at the moment. If we hope to visit another star system, even if we could travel at the speed of light, the journey would take years. Being able to hibernate would make such distances less boring for the astronauts and save energy.
Some scientists have treated that seriously. They started to do something on long-term hibernation as a way to make long-term space travel possible and easier.
() 4. Why DON'T humans hibernate?
A. We have lots of food to eat.
B. Humans don't like sleeping.
C. Our body is not designed for hibernation.
D. The temperature isn't low enough.
() 5. Which of the following is TRUE according to the passage?
A. Humans can't keep away from the cold.
B. All the animals enter hibernation to get through winter.
C. Human hibernation is helpful for long-term space travel.
D. Hibernation makes animals' bodies warm and their heartbeat fast.
() 6. What does the underlined word "that" in the last paragraph refer to?
A. Long-distance space travel.
B. A journey to Mars.
C. Human hibernation in the future.
D. Saving energy.
() 7. What's the best title for the passage?
A. Is human hibernation possible?
B. Is human hibernation easy?
C. Is human hibernation interesting?
D. Is human hibernation different?
With low temperatures and less and less food, winter is an uncomfortable season for animals. Many animals enter hibernation to get through it.
Hibernation is when an animal goes into a state of being inactive for a long time. Animals hide away from their enemies. Hibernation makes the animals' bodies cool and slows their heartbeat to just a few times per minute, for up to months at a time.
But why don't humans hibernate? Humans don't enter hibernation for many reasons. Our body is not designed for hibernation. Our ancestors were animals with no history of hibernating. For example, human waste is a huge problem for human hibernation. Animals are able to stop their waste. Unluckily, humans can't do this.
There are other problems. Body temperatures below $28°\mathrm{C}$ may bring a lot of trouble and cause aches. Low temperatures can also make people easier to be ill. In fact, humans don't need to sleep through winter. We have found fire, clothes, shelter, hunting and farming. These ways can help us keep away from the cold.
Could humans hibernate in the future? For long-distance(长途) space travel, it's possible. A journey to Mars would take around months at the moment. If we hope to visit another star system, even if we could travel at the speed of light, the journey would take years. Being able to hibernate would make such distances less boring for the astronauts and save energy.
Some scientists have treated that seriously. They started to do something on long-term hibernation as a way to make long-term space travel possible and easier.
() 4. Why DON'T humans hibernate?
A. We have lots of food to eat.
B. Humans don't like sleeping.
C. Our body is not designed for hibernation.
D. The temperature isn't low enough.
() 5. Which of the following is TRUE according to the passage?
A. Humans can't keep away from the cold.
B. All the animals enter hibernation to get through winter.
C. Human hibernation is helpful for long-term space travel.
D. Hibernation makes animals' bodies warm and their heartbeat fast.
() 6. What does the underlined word "that" in the last paragraph refer to?
A. Long-distance space travel.
B. A journey to Mars.
C. Human hibernation in the future.
D. Saving energy.
() 7. What's the best title for the passage?
A. Is human hibernation possible?
B. Is human hibernation easy?
C. Is human hibernation interesting?
D. Is human hibernation different?
答案
4. C 5. C 6. C 7. A
解析
4. 根据文章第三段内容“Humans don't enter hibernation for many reasons. Our body is not designed for hibernation.”可知，人类不冬眠的原因是我们的身体并非为冬眠设计，A、B、D选项的内容在文中均无依据，因此选C。
5. 逐一判断选项：A选项和第四段“These ways can help us keep away from the cold.”表述不符；B选项和第一段“Many animals enter hibernation to get through it.”里的many（许多）并非all（所有）不符；D选项和第二段“Hibernation makes the animals' bodies cool and slows their heartbeat”表述不符；C选项结合最后两段内容，人类冬眠能让长途太空旅行减少宇航员的无聊感、节省能量，对长期太空旅行有帮助，表述正确，因此选C。
6. 画线词that的前文提出了问题“Could humans hibernate in the future?”，后文说明科学家开始研究长期冬眠来让长期太空旅行成为可能，因此that指代的是“未来人类实现冬眠”这件事，选C。
7. 全文先介绍动物冬眠的相关知识，接着说明当下人类无法冬眠的原因，最后探讨未来人类是否有可能实现冬眠，整体围绕“人类冬眠是否可行”展开，因此最佳标题是A选项。
5. 逐一判断选项：A选项和第四段“These ways can help us keep away from the cold.”表述不符；B选项和第一段“Many animals enter hibernation to get through it.”里的many（许多）并非all（所有）不符；D选项和第二段“Hibernation makes the animals' bodies cool and slows their heartbeat”表述不符；C选项结合最后两段内容，人类冬眠能让长途太空旅行减少宇航员的无聊感、节省能量，对长期太空旅行有帮助，表述正确，因此选C。
6. 画线词that的前文提出了问题“Could humans hibernate in the future?”，后文说明科学家开始研究长期冬眠来让长期太空旅行成为可能，因此that指代的是“未来人类实现冬眠”这件事，选C。
7. 全文先介绍动物冬眠的相关知识，接着说明当下人类无法冬眠的原因，最后探讨未来人类是否有可能实现冬眠，整体围绕“人类冬眠是否可行”展开，因此最佳标题是A选项。
