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. |
A.is weaker than | B.is stronger than |
C.is better than | D.is worse than |
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. |
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
Wugging, or web-use giving, describes the act of giving to charity at no cost to the user. By using Everyclick.com, which is being added to a number of university computers across the UK, students can raise money every time they search, but it won’t cost them a penny.
Research shows that students are extremely passionate about supporting charity — 88% of full time students have used the Internet to give to charity. This figure is high considering this age group is often the least likely to have their own income. 19% of 22 to 24 year olds have short-term debts of more than £5,000. With rising personal debt levels in this age group, due to university tuition fees or personal loans and a lack of long-term savings, traditional methods of donating to charity are often not appealing or possible.
Beth Truman, a 21 year old recent university graduate, has used everyclick.com to donate to her chosen charity, the RSPCA, for two years and has seen the “wugging” grow in popularity with students. “When you’re at university you become more socially aware, but it’s sometimes hard to give to others when you have little money yourself,” says Beth. “Wugging is great for people in this age group as it allows them to use the technology on a daily basis to give to charity, without costing them a single penny.”
Wugging is perfect for people who want to be more socially aware and supportive but don’t feel they have the means to do so. Students using the web can raise money for causes they care about without costing them anything in terms of time or money, and charities get a valuable source of funding.
Everyclick.com works like any other search engine, allowing users to search for information, news and images but users can decide which of the UK’s 170,000 charities they would like to support through their clicks. Everyclick.com then makes monthly payments to every registered charity. Launched in June 2005, Everyclick.com is now the eighth largest search engine and one of the busiest charity websites in the UK.
【小題1】According to the passage, “wugging” is actually _______.
A.a(chǎn) student movement | B.a(chǎn) charity-related action |
C.a(chǎn) school organization | D.a(chǎn) website |
A.frees students of the financial worries |
B.receives much money from students |
C.offers valuable information to students |
D.praises students for their money-raising |
A.It makes Everyclick.com popular in the UK. |
B.It becomes easy to do charity because of it. |
C.It results in students’ more social awareness. |
D.It helps students to save money. |
A.most full time students do charity on the Internet every day |
B.Everyclick.com helps students pay for the college education |
C.“wugging” is a win-win idea for both students and charities |
D.Everyclick.com is the most successful search engine in the UK |
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科目:高中英語 來源: 題型:閱讀理解
Edward Snowden—the fugitive (逃亡者) former U.S.intelligence employee —appears to be stuck in Moscow, unable to leave without a valid American passport, according to interviews Sunday with two men who had sought to aid him: WikiLeaks’ Julian Assange and Ecuadoran President Rafael Correa.
Snowden, 30, arrived at Moscow’s Sheremetyevo International Airport last weekend, after previously taking refuge in Hong Kong. Moscow was only supposed to be a stopover.WikiLeaks, the anti-secrecy organization, had said Snowden was headed on to Ecuador—whose president has been critical of the United States — and that he would seek asylum there.
Now, however, both men said Snowden is unable to leave.
"The United States, by canceling his passport, has left him for the moment trapped in Russia," said Assange, the founder of WikiLeaks, on ABC ' s " This Week With George Stephanopoulos". The United States canceled Snowden' s passport last weekend. Assange criticized the United States, saying: " To take a passport from a young man in a difficult situation like that is a disgusting action."
President Correa spoke to the Associated Press in Puerto Viejo, Ecuador. For now, he told the AP, Snowden was "under the care of the Russian authorities. "
"This is the decision of Russian authorities. He doesn't have a passport. I don't know the Russian laws, I don' t know if he can leave the airport, but I understand that he can' t," Correa said. He said that the case was now out of Ecuador' s hands. "If Snowden arrives at an Ecuadoran Embassy, we' 11 analyze his request for asylum."
Snowden traveled from Hong Kong to Moscow on his U.S.passport. Although the U.S.had already revoked it, Hong Kong authorities said they hadn’t received the official request to cancel the passport before Snowden left.
An official at the Ecuadoran Embassy in London had also issued a letter of safe passage for Snowden. But Snowden apparently did not use it for his trip to Moscow.
And it doesn’t appear that the Ecuadoran government would make a similar gesture again.
On Sunday, Correa told the AP that an Ecuadoran official at that embassy had committed "a serious error" by issuing the first letter without consulting officials back home. Correa said the consul would be punished, although he didn’t specify how.
Correa' s tone seemed to have shifted after a conversation with Vice President Biden on Friday.Where Correa had earlier been aggressive and determined, he now voiced respect for U.S.legal procedures.
【小題1】Edward Snowden is a person who once worked in a federal department ______.
A.to assist the governor of one state |
B.to collect information secretly for the US |
C.to organize overseas promotion campaign |
D.to educate intelligence employees |
A.shelter. | B.praise. | C.position. | D.forgiveness. |
A.A letter of safe passage from the Ecuadoran Embassy. |
B.Permission from Chinese government |
C.Invitation of the Russian authorities. |
D.An American passport. |
A.Edward Snowden will live in Moscow forever. |
B.Ecuadoran government will provide Edward Snowden protection. |
C.Through U.S.legal procedures Edward Snowden has been caught. |
D.Correa hesitated to assist Edward Snowden. |
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科目:高中英語 來源: 題型:閱讀理解
On March 28th, the New York Times will begin charging all but the most infrequent users to read articles online.
In a letter to readers, Arthur Sulzberger, Jr., the publisher of the paper, laid out the details of the paywall, which he said will go into effect immediately in Canada and on March 28th for the rest of the world. He called the move “an important step that we hope you will see as an investment in the Times, one that will strengthen our ability to provide high-quality journalism to readers around the world and on any platform.”
Sulzberger said that readers will be able to read 20 articles per month at no charge. Once they click on the 21st piece, however, they’ll be presented with three payment options: $ 15 for four weeks of online and mobile application access, $ 20 for access to the site and the iPad application, or $ 35 for access to everything. People who already receive the printed paper through home delivery will enjoy free and unlimited access to the Times on all platforms.
These details largely agree with earlier reports on how the paywall would work. The Times had made it clear that it did not want to imitate the total paywalls put into effect by papers such as The Times of London and Newsday, which block access to all contents unless the reader pays.
The paper also signaled that it wants to stay relevant in the social media world. According to Sulzberger's announcement, people who come to the Times site from Facebook, Twitter or from blogs will be able to read those articles even if they have gone over their monthly limit.
However, Sulzberger said that a limit will be placed on “some search engines”, meaning that after readers have accessed a certain number of articles from search engines, any further articles they access from there will be added to their monthly count. It was reported that the only search engine that will be affected this way is Google, where there will be a five-article limit. This marks a clear attempt by the Times to close what could be a giant loophole (漏洞), since so much online traffic is directed through Google. But it also presents a risk for the Times for the same reason.
Sulzberger seems well aware of the risk. “The challenge now is to put a price on our work without walling ourselves off from the global network,” he said, adding that the Times must “continue to engage with the widest possible audience.”
【小題1】The author’s main purpose in the text is to _______.
A.describe research findings | B.report a piece of news |
C.make advertisements | D.suggest a solution |
A.It wants to stay relevant in the social media world. |
B.It has too many readers coming from the other sites. |
C.It is seeking new financial sources for its development. |
D.It is trying a way to offer better service to its readers. |
A.Those subscribing to the printed newspapers |
B.Readers clicking through from Facebook. |
C.Those using Google research engine |
D.Readers paying $ 35 a month. |
A.It may bring the Times more competition with the other media |
B.It may stop the Times connecting to the global network |
C.It may block the readers from the other websites |
D.It may result in huge drops in papers' online readership |
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科目:高中英語 來源: 題型:閱讀理解
SYDNEY 2005-01-01 08:33—Mother of two, Jillian Searle, had to choose between her children when she made a life-or-death decision.
Swept up by mountainous tsunami (海嘯) waves at a Thai resort ( 旅游勝地), she could not hold on to both her young sons and survive . Fighting to stay above the waters , she had to choose which one would have to take his chances in the swirling torrent (漩流).
“I knew I had to let go of one of them and I just thought I’d better let go of the one that’s the older,” she told Sky News television in a report broadcast on Thursday. She said she was accompanied by the two boys, Lachie, 5, and two-year-old Blake, and their father, Brad, who had watched the drama helplessly from their first-floor hotel room, when the waves struck. “And I was screaming, trying to find him, and we thought he was dead,” she told reporters on arrival back in Australia. Lachie was found alive about 2 hours later clinging to a door and, looked uninjured as his mother spoke to reporters.
British surfer (沖浪運(yùn)動(dòng)員) Martin Markwell is also a lucky man. He had always dreamed of catching that perfect wave –but when it finally came along, it was a nightmare. He was on his surfboard when he was swept up by a tsunami wave.
“It was really terrible because I was surfing, I was really surfing on a wave I wasn’t supposed to be on,” he said. “As an experienced surfer, when I saw the wave come I realized something was wrong, but I couldn’t escape because my surfboard was tied to my ankle.”
His wife Vicki and son Jake looked on in horror from a hotel balcony as he crashed towards the shore. Luckily , he stayed on top of his board until he reached the hotel , jumped off and got to safety as the ocean rolled back to feed a much larger tsunami wave on its way . The family regrouped and ran to safety just minutes before a giant tsunami wave 10 meters high.
【小題1】When the waves struck, the father Brad .
A.reported the disaster to Sky News television |
B.was watching a drama play on TV in the hotel |
C.tried to find his son lost in the waters |
D.watched things going on , unable to do anything |
A.a(chǎn)n old man | B.Lachie | C.Brad | D.Blake |
A.Lachie and Martin were both with their family members when the disaster happened. |
B.Lachie and Martin both survived from the high waves when tsunami struck. |
C.Lachie and Martin were both travelers from Europe on holiday in Thailand. |
D.Lachie and Martin were both alive owing to their good luck. |
A.Narrow Escape | B.Disaster Caused by Tsunami |
C.Exciting Surfing Experience | D.Struggle Against Tsunami |
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科目:高中英語 來源: 題型:閱讀理解
While income worry is a rather common problem of the aged, loneliness is another problem that aged parents may face. Of all the reasons that explain their loneliness, a large geographical distance between parents and their children is the major one. This phenomenon(現(xiàn)象) is commonly known as "Empty Nest Syndrome”(空巢綜合癥).
In order to find better chances outside their countries, many young people have gone abroad, leaving their parents behind with no clear idea of when they will return home. Their parents spend countless lonely days and nights, taking care of themselves, in the hope that someday their children will come back to stay with them. The fact that most of these young people have gone to Europeanized or Americanized societies makes it unlikely that they will hold as tightly to the value of duty as they would have if they had not left their countries. Whatever the case, it has been noted that the values they hold do not necessarily match what they actually do. This geographical and cultural distance also prevents the grown-up children from providing response in time for their aged parents living by themselves.
The situation in which grown-up children live far away from their aged parents has been described as "distant parent phenomenon", which is common both in developed countries and in developing countries. Our society has not yet been well prepared for "Empty Nest Syndrome".
【小題1】According to the passage, the loneliness of aged parents is mainly caused by ________.
A.their earlier experience of living alone |
B.the poor living conditions in their native countries |
C.the common worry that they have not saved much money |
D.the distance between where parents live and where their children live |
A.realize their dreams in foreign countries |
B.seek a better place for their aged parents |
C.live in the countries with more money |
D.continue their studies abroad |
A.they do not hold to the value of duty at all |
B.they can give some help to their parents back home |
C.they cannot do what they should for their parents |
D.they believe what they actually do is right |
A.the situations in the developed and developing countries are different |
B."Empty Nest Syndrome" has arrived unexpectedly in our society |
C.children will become independent as soon as they go abroad |
D.the aged parents are not fully prepared for "Empty Nest Syndrome" |
A.France | B.America | C.China | D.Britain |
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科目:高中英語 來源: 題型:閱讀理解
Do you like to eat out? Do you like to eat quickly? Do you like inexpensive food? Some people go to fast-food restaurants for these reasons. In the past, people usually went to diners(小餐館)for these reasons. In fact, many people in the States still go to diners today for the same reasons.
A man named Walter Scott had the first “diner” in 1872. It wasn’t a real diner. It was only a food cart. People on the street walked up to the cart to buy food. These carts served late-night workers who wanted a cup of coffee and a late-night meal. The meal was a sandwich or boiled eggs. In 1887, Samuel Jones built the first diner big enough to allow the customers to come inside. However, they did not sit down. Later, people built diners with counters and stools, and people sat down while they ate.
Before long, many diners stayed open around the clock. In other words, people were able to eat in diner at any time. Diners changed in other ways, too. The original menu of sandwiches and coffee became bigger. It included soup, favorite dishes, and a breakfast menu. In addition, diners soon became permanent buildings. They were no longer carts on wheels.
Diners today look similar to the diners of the early 1900s. They are usually buildings with large windows. Inside, the diners have shining counters with stools, booths, and tables and chairs. People can eat all three meals in a modern diner.
Today, many people eat in fast-food restaurants such as McDonald’s and Burger King. However, the diner remains an American tradition, and thousands of people still enjoy eating there. It was popular a century ago, and it is still popular today.
【小題1】A man named Walter Scott had the first “diner” in 1872. Why is the word “diner” in quotation marks(引號(hào))?
A.Because it is spelled differently from “ dinner” |
B.Because the first diner was not what it is now |
C.Because diner was a new word |
D.Because it is a special kind of restaurant |
A.Two ways | B.three ways | C.four ways | D.five ways |
A.Diners existed before a fast-food restaurant |
B.The menu included more food than sandwiches and coffee |
C.Burger King is a fast-food restaurant |
D.Sandwiches became bigger |
A. The diner is a traditional , popular place to eat in the United States |
B. Samuel Johns built the first diner big enough to allow the customers to come inside |
C. American diners serve many types of food 24 hours a day to their customers |
D. Diners are different from fast-food restaurants in many ways |
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科目:高中英語 來源: 題型:閱讀理解
Manchester is the “capital” of the northwest of England. Situated on the east bank of the River Irwell, it is a lively busy city with a large student population. Although it was once seen as only a dull industrial place, in recent years Manchester has become the “in” place. It is well-known for its clubs, its fashion and its music, not to mention its world -famous football team, Manchester United.
There is plenty to see in Manchester and something to suit all taste. For example, you have a taste of the Orient in Chinatown, home to Manchester’s large Chinese population. Another place to visit is the historical Eastlefield area, which contains the first urban heritage park in Britain. Here you can walk around the museums and experience the atmosphere of the 19th century Manchester.
Football fans need not feel left out; they can always make a trip to the Old Trafford Manchester United Museum which also contains a coffee shop and a souvenir shop
It’s easy to find your way around the city center and you’re never too far away from a bus, which will take you wherever you want to go. However, many people prefer walking in a city where there’s so much to see, and much of it is off the main travel lines.
If you get tired with all that walking, you can refresh yourself at one of the many café bars in the city. There’s a wide variety of homely and old-fashioned ones
Whatever you do, you won’t have a dull moment in the place which was awarded the title of “most interesting city in Europe “. Despite its unpopular industrial image in the past, Manchester is becoming more and more popular as a tourist destination nowadays.
【小題1】According to the passage, Manchester is _________.
A.a(chǎn) big city in the southwest of England |
B.only known for its heavy industry |
C.interesting only if you like football |
D.a(chǎn) very popular place now |
A.you will see the 18th century center building |
B.you can go to Chinatown |
C.you don’t have a big choice |
D.you can visit the Eastlefield |
A.A small and dull city. | B.A city full of factories |
C.An exciting city to visit | D.A popular destination |
A.Europe’s | B.Tourism’s | C.Manchester’s | D.Industry’s |
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科目:高中英語 來源: 題型:填空題
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:
1.說明寫信原因;
2.描述書的情況;
3.約定見面時(shí)間和地點(diǎn)。
注意:
1.詞數(shù):120 -150;
2.可適當(dāng)增加細(xì)節(jié),以使行文連貫;
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
Li Hua
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