Question

How Do Animals Catch their ZZZ's（打鼾聲）？

Different creatures have developed some pretty creative ways to get their rest and stay safe． The lizard likes to sleep at the far end of small branches hanging out over a pond or lake in the rain forest． If a snake tries to slither up the branch to eat it, it will shake the branch and knock the lizard off, and the lizard will fall safely into the water． Chameleons can change color to match their surroundings in order to hide even while sleeping．

Gorillas like to sleep high in the trees． They build a new bed every night, sometimes taking up to half an hour to pile branches, twigs, and leaves into a comfortable bed． Birds also find it safe to sleep in the trees, but unless they have eggs or young chicks, they don't use a nest． They just lock their feet around a branch and hang on． A special tendon in their legs is automatically tight when they are at rest, so they won't let go and fall．

Dolphins live underwater, but must come to the surface to breathe． Scientists now believe that dolphins may sleep with only half their brain, while the other half stays awake to keep them safe and breathing． Seals also do this, lying on their sides on the surface of the water with one flipper underwater paddling to keep their noses above the surface． Some ducks may also have this ability, and actually sleep with one eye closed and one eye open．

1.How does a chameleon protect itself while sleeping?

A．By changing its body colors

B．By hanging out over a pond．

C．By sleeping with half their brain．

D．By making beds with branches．

2.Why will not birds fall when they are at rest?

A．They build nests and sleep in them．

B．They fall asleep automatically．

C．They have a loose tendon in their legs．

D．They lock their feet around a branch．

3.How do dolphins breathe?

A．They breathe underwater．

B．They come to the surface to breathe．

C．They breathe underwater or come to the surface to breathe．

D．We don't know．

4.What does the writer intend to tell us?

A．The cleverest animal is the gorilla because it can make beds．

B．Differences in habitat can lead to different living habits．

C．The ways animals catch their ZZZ's are pretty much the same．

D．In order to protect themselves most animals choose not to sleep

 

Answer 1

【答案】

1.A

2.D

3.B

4.B

【解析】

試題分析：本文主要講述的是動物在水面的時候如何保護自己，不同的動物有不同的習慣。

1.A 細節題。根據第二段最后一句Chameleons can change color to match their surroundings in order to hide even while sleeping．說明Chameleons是通過改變身體的顏色來保護自己的，故A正確。

2.D 細節題。根據第三段第4,5行They just lock their feet around a branch and hang on．說明他們的腳是緊緊扣住樹枝。故D正確。

3.B 細節題。根據文章第四段第一行Dolphins live underwater, but must come to the surface to breathe．說明海豚是要到水面上呼吸空氣的，故B正確。

4.B 主旨大意題。本文中提及了很多不同的動物在睡眠的時候采取不同的方式來保護自己。說明不同的生物有不同的生活習慣。故B正確。

考點：考查科普類短文

點評：本文主要講述的是動物在水面的時候如何保護自己。本文屬于科普類短文，最大的障礙是詞匯以及考生對閱讀內容的不熟悉，需要考生在閱讀的時候有足夠的耐心。要養成在上下文串聯中猜測詞義的能力，根據上下文中出現的同義詞，近義詞，反義詞，以及詞義的解釋來理解生詞。同時要抓住文章的中心，不要受其他信息的影響。要根據題目及選項以及文章的上下文串聯合理的判斷推理。