题目内容
【题目】阅读理解
Lack of water creates a survival problem for all desert animals.And animals can live only within a relatively narrow temperature range.For four or five months of the year，the daily temperatures in the desert may actually go beyond this range.So survival for desert animals is very difficult.
Fortunately，most desert animals have evolved (进化) to solve the heat and water problems the desert environment creates.
Take Phainopepla, a slim black bird for example. It breeds during the relatively cool spring，then leave the desert for cooler areas.Many birds are active only at dawn and within a few hours of sunset.Some birds，such as the kingbird，continue activity throughout the day，but always fly or sit in the shade.
A few desert animals，such as the Roundtailed Ground Squirrel，sleep away the hottest part of the summer.They also hibernate (冬眠) in winter to avoid the cold season.Some desert animals such as Desert Toads，stay deep under the ground until the summer rains fill ponds. They then come out from under the ground，breed，lay eggs and supply themselves with food and water for another long period.Some smaller desert animals make a hole below the surface of the soil or sand to escape the high temperatures at the desert surface.
Certain desert lizards (蜥蝎) are active during the hottest seasons，and move extremely rapidly over hot surfaces，stopping in cooler “islands” of shade.Even their legs may be longer so they absorb less surface heat while running.
【1】How many survival problems are mentioned for desert animals in Paragraph 1 ?
A．One.
B．Two.
C．Three.
D．Four.
【2】When
A．In early afternoon.
B．Around midday.
C．In early morning.
D．In late morning.
【3】The Roundtailed Ground Squirrel escapes the extreme temperatures by________.
A．sitting in the shade
B．lying in a hole
C．stopping its activity
D．moving to cool habitats
【4】According to the passage，which of the following are the most active desert animals?
A．Lizards.
B．Desert Toads.
C．Phainopepla.
D．Roundtailed Ground Squirrel.
【5】What would be the best title for the passage?
A．Survival of Desert Animals.
B．Evolution of Desert Animals.
C．Dangers of Desert Animals.
D．Hibernation of Desert Animals.
【答案】【1】B
【2】C
【3】C
【4】A
【5】A
【解析】【1】 细节理解题。第一段提到了沙漠动物面临的两大生存问题：缺水和温差变化大。
【2】 细节理解题。第三段说沙漠中的许多鸟类只在黎明和太阳落山前后的几个小时活动，由此推知在C时间在沙漠中看到很多鸟儿的可能性最大。
【3】 细节理解题。通过第四段第一句可推知C正确。
【4】 推理判断题。通过最后一段可知，蜥蜴即使是在最炎热的季节也保持活动，而其他三个选项的动物要么是在热的时候深藏地下，要么是迁往凉爽一些的地方。
【5】 主旨大意题。第二段是全文主题段，后文以很多沙漠动物为例子说明沙漠里的动物是如何克服不利环境而生活的，故A为最佳答案。
