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C
Along the river banks of the Amazon and the Orinoco there lives a bird that swims before it can fly, flies like a fat chicken, eats green leaves, has the stomach of a cow and has claws (爪) on its wings when young. They build their homes about 4.6m above the river, an important feature (特征) for the safety of the young. It is called the hoatzin. In appearance, the birds of both sexes look very much alike with brown on the back and cream and red on the underside. The head is small, with a large set of feathers on the top, bright red eyes, and blue skin. Its nearest relatives are the common birds, cuckoos. Its most striking feature, though, is only found in the young. Baby hoatzins have a claw on the leading edge of each wing and another at the end of each wing tip. Using these four claws, together with the beak (喙), they can climb about in the bushes, looking very much like primitive birds must have done. When the young hoatzins have learned to fly, they lose their claws. During the drier months between December and March hoatzins fly about the forest in groups of 20 to 30 birds, but in April, when the rainy season begins, they collect together in smaller living units of two to seven birds for producing purposes.
63．What is the text mainly about?
A．Hoatzins in dry and rainy seasons.
B．The relatives and enemies of hoatzins.
C．Primitive birds and hoatzins of the Amazon.
D．The appearance and living habits of hoatzins.
参考答案
更多 “ CAlong the river banks of the Amazon and the Orinoco there lives a bird that swims before it can fly, flies like a fat chicken, eats green leaves, has the stomach of a cow and has claws (爪) on its wings when young. They build their homes about 4.6m above the river, an important feature (特征) for the safety of the young. It is called the hoatzin. In appearance, the birds of both sexes look very much alike with brown on the back and cream and red on the underside. The head is small, with a large set of feathers on the top, bright red eyes, and blue skin. Its nearest relatives are the common birds, cuckoos. Its most striking feature, though, is only found in the young. Baby hoatzins have a claw on the leading edge of each wing and another at the end of each wing tip. Using these four claws, together with the beak (喙), they can climb about in the bushes, looking very much like primitive birds must have done. When the young hoatzins have learned to fly, they lose their claws. During the drier months between December and March hoatzins fly about the forest in groups of 20 to 30 birds, but in April, when the rainy season begins, they collect together in smaller living units of two to seven birds for producing purposes.63．What is the text mainly about?A．Hoatzins in dry and rainy seasons.B．The relatives and enemies of hoatzins.C．Primitive birds and hoatzins of the Amazon.D．The appearance and living habits of hoatzins. ” 相关考题
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单选题Which of the following is the best revision of the underlined portion of sentence 2 (reproduced below)?This is the experience that a thinker has when, after they thought about a problem long and hard, they suddenly come upon a solution in a flash when they are no longer thinking about it.A
that a thinker has when, after they thought long and hard about a problem, their solution suddenly arises like a flashB
that thinkers have when a solution suddenly had arisen like a flash after they were thinking long and hard about a problemC
that a thinker has when, after having thought long and hard about a problem, they suddenly come upon a solutionD
that thinkers have when, after having thought long hard hard about a problem, they suddenly come upon a solutionE
that thinkers have when, thinking long and hard about a problem, they suddenly come upon a solution in a flash
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As the town’s water requirements grow, it will not be able to meet those requirements by drawing on water sources other than the Gray River.B
Since 1960, the lake’s population of fish has become more biologically fragile.C
The amount of water that the lake loses to evaporation each year will increase over the next two decades.D
There are multiple sources of water besides the Gray River that feed into Lake Mudfish.E
The town of Hotstone will be able to reverse its trend of increasing water use if it implements an aggressive water conservation program.
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单选题Eight hundred years ago an Englishman _____.A
made a kind of flying machineB
tried to fly with wings made of chicken featherC
wanted to build a kind of balloonD
tried to fly on a large bird
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