| Why has the kiwi survived while its
relatives the moas have become extinct One reason, I think, is that it has
adopted nocturnal(夜间活动的) habits. Kiwis are not normally about in the daytime.
During the daylight hours they lie up in hiding, where enemies have no hope of
finding them. Their coloration protects them; the strange drab(黄褐色的) feathering,
so unlike that of most birds, gives them a cloak(伪装)of invisibility while they
sleep. And when night falls, out they come to scratch in the ground and find
worms and feed to their hearts’ content. They couldn’t do that so effectively if they didn’t have another peculiarity that I have not mentioned yet. The nostrils(鼻孔) of most birds open high up near the base of the beak(猛禽的嘴), but the kiwi wears his nostrils right near the tip of the long bill. That’s good for a bird that feeds in th A. it stays out of sight and sleeps during the day B. it usually goes from place to place during the day C. it changes the colour of its feather in the daytime D. it is caught and eaten by its enemy in the daytime [单项选择]Why has the award been granted to the IAEA
A. Because nuclear energy is much more important than other resources. B. Because the agency has been promoting the safe use of nuclear energy. C. Because the agency has done a lot of work. D. Because the agency plays a very important role in the UN. [单项选择]Why has the kiwi survived while its relatives the moas have become extinct One reason, I think, is that it has adopted nocturnal(夜间活动的) habits. Kiwis are not normally about in the daytime. During the daylight hours they lie up in hiding, where enemies have no hope of finding them. Their coloration protects them; the strange drab(黄褐色的) feathering, so unlike that of most birds, gives them a cloak(伪装)of invisibility while they sleep. And when night falls, out they come to scratch in the ground and find worms and feed to their hearts’ content.
They couldn’t do that so effectively if they didn’t have another peculiarity that I have not mentioned yet. The nostrils(鼻孔) of most birds open high up near the base of the beak(猛禽的嘴), but the kiwi wears his nostrils right near the tip of the long bill. That’s good for a bird that feeds in the ground at night. The kiwi’s .sight is poor at the best of times, but his sense of smell is acute and so is the sense of touch in the tip of that long bill A. it stays out of sight and sleeps during the day B. it usually goes from place to place during the day C. it changes the colour of its feather in the daytime D. it is caught and eaten by its enemy in the daytime [单项选择]
A. He is not equal to the job. B. He is not well paid for his work. C. He doesn’t think the job is challenging enough. D. He cannot keep mind on his work. [单项选择]Why has the captain asked the passengers to keep their seat belts on
[单项选择]Why has the woman brought up the subject of snowflake
A. She has never seen snow before. B. She is conducting research on snow. C. She wants to make artificial snow. D. She has been reading about snow. [单项选择]Why has the return of Discovery been delayed for 24 hours
A. Because of mechanical faults aboard. B. Because of unfinished work. C. Because of the bad weather at the landing site. D. Because of unknown reason. [单项选择]Why has Africa been more affected by AIDS than any other place in the world
A. Because Aft-lea is the place from where AIDS starts to spread worldwide. B. Because Africans are too brave and resourceful in trying many things. C. Because there were not systems in place both to prevent people from contracting it and spreading it. D. Because Africans arc ready to see some changes in every fiel 我来回答: 提交
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