Question

If you are afraid of the dark，it’s not a big deal．It’s perfectly normal to feel afraid After all，animals do too. “Fear matters，”says Karen Warkentin，an ecologist．“It’s a good thing，” she adds, “because fear makes you do things that keep you alive.”

Like kids，many animals experience fear and they respond to the feeling in variety of ways．A frightened turtle pulls its head and legs inside its shell．A  small fish will swim away when a big，hungry fish approaches．

Some animals respond to fear in ways you might not expect．The first example is that the fear of being eaten can scare some frogs right out of their eggs. Warkentin made the surprising discovery while studying red—eyed tree frogs in Costa Rica.

In this species，female frogs attach jellylike clumps（果凍一樣的塊狀物）of their eggs to the undersides of leaves．The leaves hang on branches that dangle（懸掛）over ponds．After they hatch from the eggs，the tadpoles（蝌蚪）then fall into the water，where they eventually grow into adult frogs.

Tree frog eggs usually grow for 6 days before hatching．If they sense that a hungry snake is about to attack，however，they can hatch up to 2 days ahead of schedule. As the snakes are unable to swim，by falling into the water early，the tadpoles can escape.

If hatching early helps protect red—eyed tree frogs from snakes，you might wonder why their eggs don’t always hatch sooner．It turns out that hatching early brings its own danger．Once tadpoles land in the water，hungry fish and other animals like to eat them too．Staying in their eggs for a full 6 days，then，allows frog embryos（胚胎）to grow big and strong．This extra growth improves their chances of surviving in the water．

1.It can be inferred from the passage that fears      .

A．help animals grow bigger and stronger

B．a(chǎn)re less common among young animals

C．help animals move a lot to fit the environment

D．a(chǎn)re more or less important in order for animals to survive

2.We are told in the passage that tree frogs        .

A．face danger both inside their eggs and in the water

B．will grow fast if they fall into the water later

C．a(chǎn)re surprisingly clever when inside their eggs

D．stay in their eggs longer if they are frightened

3.Why do the tadpoles hatch up to 2 days ahead of the schedule？Because

A．They like falling into the water early

B．They want to grow into adult frog

C． They sense a hungry snake is about to attack

D．Frog embryos can grow strong

4.What is the best title of the passage ？

A．What is Fear                           B．Why do we feel afraid

C．You feel afraid，animals do too             D．Fear is a good thing

5.What do you think would be discussed in the following paragraph?

A．Further explanations as to why tree frogs hatch ahead of schedule．

B．How the unborn frogs know when a snake is about to attack them．

C．Another example of animals that responds to fear in an unexpected way．

D．How tree frogs improve their chances of survival before falling into the water.

 

Answer 1

【答案】

1.D

2.A

3.C

4.D

5.C

【解析】

試題分析：本文通過(guò)動(dòng)物逃生的故事告訴我們恐懼有時(shí)候是一件好事情，能夠讓我們遠(yuǎn)離危險(xiǎn)。

1.D 推斷題。根據(jù)文章第一段1,2行If you are afraid of the dark，it’s not a big deal．It’s perfectly normal to feel afraid After all，animals do too.說(shuō)明對(duì)于動(dòng)物來(lái)說(shuō)，恐懼也可能讓他們?cè)�離危險(xiǎn)而活下來(lái)。故D項(xiàng)正確。

2.A 推理題。根據(jù)文章最后一段If hatching early helps protect red—eyed tree frogs from snakes，you might wonder why their eggs don’t always hatch sooner．It turns out that hatching early brings its own danger．Once tadpoles land in the water，hungry fish and other animals like to eat them too．說(shuō)明陸地上的蛇，水里的魚都對(duì)tree frogs產(chǎn)生威脅，所以說(shuō)他們面臨這來(lái)自多方面的危險(xiǎn)。故A正確。

3.C 細(xì)節(jié)題。根據(jù)第五段第2行If they sense that a hungry snake is about to attack，however，they can hatch up to 2 days ahead of schedule.說(shuō)明他們感覺到蛇的危險(xiǎn)是這樣做的主要原因。故C項(xiàng)正確。

4.D 主旨大意題。根據(jù)文章主題段第一段“because fear makes you do things that keep you alive.”和If you are afraid of the dark，it’s not a big deal．It’s perfectly normal to feel afraid After all，animals do too. 說(shuō)明恐懼有時(shí)候是一件好事情。讓我們遠(yuǎn)離危險(xiǎn)。故D正確。

5.C 推理題。本文中作者描述tree frogs獨(dú)特的逃生的方法，那么下一段中應(yīng)該是講述另外一種你想象不到的方法，故C正確。

考點(diǎn)：考查科普類短文閱讀

點(diǎn)評(píng)：本文通過(guò)動(dòng)物逃生的故事告訴我們恐懼有時(shí)候是一件好事情，能夠讓我們遠(yuǎn)離危險(xiǎn)。

屬于科普類短文閱讀，此類文章的最大的障礙是詞匯以及考生對(duì)閱讀內(nèi)容的不熟悉，需要考生在閱讀的時(shí)候有足夠的耐心。要養(yǎng)成在上下文串聯(lián)中猜測(cè)詞義的能力，根據(jù)上下文中出現(xiàn)的同義詞，近義詞，反義詞，以及詞義的解釋來(lái)理解生詞。同時(shí)要抓住文章的中心，不要受其他信息的影響。要根據(jù)題目及選項(xiàng)以及文章的上下文串聯(lián)合理的判斷推理。