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  3. Honeybees cannot live alone. Their body structure and instincts equip them for life in a colony(群居)or community, where they have

Honeybees cannot live alone. Their body structure and instincts equip them for life in a colony(群居)or community, where they have

admin2016-10-25  60
问题     Honeybees cannot live alone. Their body structure and instincts equip them for life in a colony(群居)or community, where they have a complex social organization and the various duties are divided among the individuals according to physical fitness and age. An individual worker bee cannot reproduce itself. While it may continue to live if forcibly isolated from its mates， it fails to care for itself adequately(足够), and soon dies. Most insects have the ability to hibernate(冬眠)in winter, but the honeybee seems to have lost this. Since at low temperatures the bee will die, it must have the ability to make its own environment, so far as temperature is concerned. This makes a colony necessary to the bees in winter, so that they may collectively warm each other. Efficiency, if not necessity, demands that the work of the colony be divided, and such a division of labor tends to increase the need to maintain the colony. The physical structure of the honeybee is further suited for the defense of the entire colony rather than for its own defense. The bee’s barbed(有刺的)sting is used only once and is made more effective by the fact that it is left behind in the victim. With the loss of the sting, however, the bee dies. This kind of defensive weapon is not of service to the individual, but to the community.
It can be inferred from the passage that at one time bees had the ability to______.
选项 A、increase their activity in lower temperatures
B、leave cold climates during winter
C、remain dormant through periods of cold weather
D、construct insulated hives
答案C
解析 第五句Most insects have the ability to hibernate in winter，but thehoneybee seems to have lost this．大多数昆虫都有冬眠的能力，但蜜蜂似乎已经失去了这种能力。由此可推断出蜜蜂原来曾经具有过与其它昆虫一样的冬眠能力。故答案为C。
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