When an ant dies, other ants take it out of the nest, often within an hour after its death. This behavior interests scientists and they wonder how ants know for sure—and so soon—that another ant is dead.
One scientist recently came up with a way to explain this ant behaviour. Dong-Hwan Choe is a biologist, a scientist who studies animals and plants. He found that ants have a chemical on the outside of their bodies that signals to other ants, “I'm dead—take me away” when it is dead.
But there's a question to answer: As we know, if an ant is dead, it stops moving. But when an ant is sleeping or knocked unconscious, it is also not moving. However, other ants don't move the living ant out of the nest. How do they know this ant is not dead? Choe found that ants have another chemical on their bodies, which tells nearby ants something like, “Wait—I'm not dead yet” when it is not dead. Choe suspects that when an ant dies, the chemical that says, “Wait I'm not dead yet” quickly goes away. When other ants detect the “dead” chemical without the “not dead yet” chemical, they move away the body.
To test his theory , Choe and his team put different chemicals on ants. When the scientists used the “I'm dead” chemical, other ants quickly moved the treated ant away. When the scientists used the “Wait—I'm not dead yet” chemical, other ants left the treated ant alone. Choe believes this behavior shows that the “not dead yet” chemical overrides the “dead” chemical when picked up by other ants. And that when an ant dies, the “not dead yet” chemical fades away. Other nearby ants then detect the remaining “dead” chemical and remove the body from the nest.
Understanding this behavior can help scientists figure out how to stop ants from invading new places and causing problems.
【小題1】What is the function of the first paragraph?

A.Leading the following paragraphs.
B.Showing the main idea of the passage.
C.Introducing the background of the passage.
D.Giving a summary of the passage.
【小題2】Which of the following has the closest meaning to the underlined word “overrides” in the fourth paragraph?
A.is weaker thanB.is stronger than
C.is better thanD.is worse than
【小題3】What can we learn from the passage?
A.Living ants can also be taken away when they are not moving.
B.When an ant dies, it can tell others using a certain chemical.
C.A living ant can pretend to be dead using a special chemical.
D.Ants often use chemicals to communicate with each other.
【小題4】Which of the following descriptions about Dong-Hwan Choe is right?
A.Choe did this study in order to stop ants from invading new places.
B.Choe is a biologist who is only interested in animals, especially in ants.
C.Choe first came up with an idea to explain this ant behavior,and then did some tests to prove his theory.
D.Choe did the research on this ant behavior on his own


【小題1】A
【小題2】B
【小題3】B
【小題4】C

解析試題分析:這篇文章報(bào)道了研究表明死去的螞蟻身體會(huì)釋放一種化學(xué)物質(zhì),其它螞蟻聞到這種氣味,就會(huì)把死螞蟻抬出蟻穴。
【小題1】第一自然段的作用就是引出下文,故選A。
【小題2】根據(jù)When the scientists used the “Wait—I'm not dead yet” chemical, other ants left the treated ant alone.可猜出“overrides”意思是優(yōu)先于,比……強(qiáng),故選B。
【小題3】根據(jù)He found that ants have a chemical on the outside of their bodies that signals to other ants, “I'm dead—take me away” when it is dead.所以答案為B。
【小題4】根據(jù)One scientist recently came up with a way to explain this ant behaviour. Dong-Hwan Choe is a biologist, a scientist who studies animals and plants.以及To test his theory , Choe and his team put different chemicals on ants.因此選C。
考點(diǎn):新聞報(bào)道類短文閱讀理解
點(diǎn)評(píng):要想答好題目,重在理解全文意思。這篇文章比較難,先看問題,再帶著問題讀短文,找出各段落的主旨句,理解全文內(nèi)容,總結(jié)全文中心,然后再回到問題上來,很容易選出正確答案。多了解一些常識(shí)性知識(shí)有利于閱讀理解。如果對(duì)文章的相關(guān)背景有所了解,讀起文章一定既省時(shí)又省力。因此,在學(xué)習(xí)過程中,了解各方面的背景知識(shí)是十分重要的。

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科目:高中英語 來源: 題型:閱讀理解

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D.It helps students to save money.
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 假如你是新華中學(xué)的學(xué)生李華,偶然看到在你市求學(xué)的美國(guó)學(xué)生Tom在網(wǎng)上發(fā)帖,要大家給他推薦一本學(xué)習(xí)漢語的書。你手頭正好有一本合適的書可以借給他。請(qǐng)你給他發(fā)一封電子郵件,要點(diǎn)如下:
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3.開頭和結(jié)尾已給出,不計(jì)入總詞數(shù)。
Dear Tom,    
I'm Ii Hua, a student of Xinhua Middle School._______________________________ 
___________________________________________________________________________
______________________________________________________________________________
Best wishes.             
Yours             
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