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精英家教網 > 高中英語 > 題目詳情

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 behavior. 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 thanC.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5】What is mainly discussed in the passage?
A.How to decide whether an ant is dead or not.
B.Why ants have special chemicals on their bodies.
C.reasons for the removable behavior of ants.
D.How ants manage to keep their nests clean.


【小題1】A
【小題2】B
【小題3】B
【小題4】C
【小題5】C

解析試題分析:本文主要解釋的是為什么螞蟻死了以后,別的螞蟻很快就發現這些死了的螞蟻,很快就把它們的尸體搬走。解釋了具體的原因,并進行了證明。
【小題1】A 推理題。文章中用第一段來引起讀者的注意,讓他們有繼續向下閱讀的欲望。目的在于引起下文。故A正確。
【小題2】B 推理題。根據文章最后一段3,4,5,6行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.可知在“Wait—I'm not dead yet” chemical比the “dead” chemical更濃烈的時候,螞蟻們就不會把尸體搬走。故改詞是指B項的意思。
【小題3】B 細節題。根據文章第二段最后一句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.可知螞蟻在死亡以后用一種化學物質來告訴別的螞蟻他已經死了。故B正確。
【小題4】C 推理題。根據文章3,4段內容可知,在第三段中,他先提出一個假設的觀點,在第4段中用實驗來證明自己的想法的準確性。這正是他追求真相的方法,故C正確。
【小題5】C 主旨大意題。本文主要解釋的是為什么螞蟻死了以后,別的螞蟻很快就發現這些死了的螞蟻,很快就把它們的尸體搬走。解釋了具體的原因,并進行了證明。故C正確。
考點:考察科普類短文閱讀
點評:本文主要解釋的是為什么螞蟻死了以后,別的螞蟻很快就發現這些死了的螞蟻,很快就把它們的尸體搬走。解釋了具體的原因,并進行了證明。本文主要考查推理題。在解題時要立足已知,推斷未知。立足現在,猜測未來。不能主觀臆想,憑空想象,隨意揣測,更不能以自己的觀點代替作者的觀點;要把握句、段之間的邏輯關系,了解語篇的結構。要體會文章的基調,揣摸作者的態度,摸準邏輯發展的方向,悟出作者的弦外之音。

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(   ) 4. A. full                   B. half                         C. bright               D. part

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As a parent you have the responsibility to help your children understand money. But first you will need to understand your own attitude towards money, and make sure to practise what you teach.
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Take a minute to write down a list. Below are some ideas to get you started. There’s no right or wrong here. This exercise is just to help you grasp what money means to you so that you can help your children understand your values.
◆ Home
◆ Household expenses
◆ Education
◆ Recreation, entertainment
◆ Savings
◆ Charitable contributions
You can start discussing money when your children are as young as three years old. The best time to teach a child anything is when he or she shows an interest. So he prepared to start talking about money when your child starts asking you to buy candy or toys.
Begin by showing how money is exchanged for items or services. Show your children how money works by allowing them to buy something, such as a toy or a book.
Be open and honest, and explain to your children why they can or cannot have certain items. If you must say no to a child’s request to spend money, you might say, “You have enough toy trucks now.” Or, if the request is for multiple items, “You have a choice to make, between this toy and that one.”
You can start explaining the bigger picture once your children understand the basic function of money. Show an older child how money is used to provide for the whole family.
45. Why should parents understand their own money attitudes first?
A. To help their children earn money.      B. To set an exampel to their children.
C. To help them set financial goals.       D. To help them tell right from wrong.
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A. Travel and investments.               B. Household expenses.
C. Education and entertainment.         D. Savings and charitable contributions.
47. Which of the following is NOT a way to teach the children about money?
A. Showing how money is exchanged.
B. Allowing children to buy whatever they like.
C. Explaining the limits involved in using money.
D. Having an open discussion about money.
48. According to the passage, when should parents start teaching a child about money?
A. When the child can understand its basic function.
B. When the child can understand how money is used to provide for the whole family.
C. When the child knows how to support a family.
D. As young as three, or when they start showing an interest.

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