The world’s native languages are dying out at an unprecedented(空前的) rate, taking with them irreplaceable(不能替代的) knowledge about the natural world, according to a new study.
The study identified five global “hot spots” where languages are vanishing faster than anywhere else ---- eastern Siberia, northern Australia, central South America, the US state of Oklahoma and the US Pacific Northwest. “Languages are suffering a global extinction crisis that greatly goes beyond the pace of species extinction,” linguistics(语言学的) professor David Harrison noted, who said half of the world’s 7,000 languages were expected to disappear before the end of the century.
Native people had an intimate(详尽的) knowledge of their environment that was lost when their language disappeared, along with other certain things often unfamiliar to us, Harrison stressed. “Most of what we know about species and ecosystems is not written down anywhere, it’s only in people’s heads,” he said. “We are seeing in front of our eyes the loss of the human knowledge base.”
Harrison was one of a team of linguists who carried out the study. The researchers traveled to Australia this year to study native languages, some of the most endangered. According to Harrison, in Australia, they were heartened to see a woman in her 80s who was one of the only three remaining speakers of the Yawuru language passing on her knowledge to schoolchildren. He said such inter-generational exchanges were the only way native languages could survive. “The children had elected to take this course, no one forced them,” he said. “When we asked them why they were learning it, they said,‘This is a dying language, we need to learn it’.” Also, while there they found a man with knowledge of the Amurdag language, which had previously been thought extinct.
The researchers said all five of the hot spots identified were areas that had been successfully colonized and where a dominant language such as Spanish or English was threatening native tongues.What does this text mainly talk about?
| A．A study on native languages endangered. |
| B．The knowledge of native languages. |
| C．People’s efforts in saving native languages. |
| D．Harrison and his study on languages. |
The underlined word“vanishing”in the second paragraph can be best replaced by .
| A．developing | B．changing | C．increasing | D．Disappearing |
According to Harrison, language extinction .
| A．causes the researchers lots of worries |
| B．speeds up the pace of species extinction |
| C．threatens the existing of Spanish and English |
| D．brings about a loss of knowledge about the environment |
Which of the following can be described as good news?
| A．Native languages became less endangered in Australia. |
| B．A man was found with knowledge of the Amurdag language. |
| C．Researchers were well received by native people in Australia. |
| D．Many schoolchildren showed interest in the Yawuru language. |
The computer keyboard helped kill shorthand—a system of rapid handwriting, and now it’s threatening to finish off handwriting as a whole. When handwritten essays were introduced on the SAT exams for the class of 2012, just 15% of the most1.5 million students wrote their answers in cursive(草写字母). The rest? Block letters.
And those college hopefuls are just the first edge of a wave of US students who no longer get much handwriting instructions in the primary grades, frequently 10 minutes a day or less. As a result, more and more students struggle to read and write cursive.
At Keene Mill Elementary School in Springfield, all their poems and stories are typed. Children in Fairfax County schools are taught keyboarding beginning in kindergarten. Older students who never mastered handwriting say it doesn’t affect their grades.
There are those who say the culture is at a crossing, turning from the written word to the typed one. If handwriting becomes a lost form of communication, does it matter?
It was at University Virginia that researchers recently discovered a previously unknown poem by Robert, written in his unique script. Handwritten documents are more valuable to researchers, historians say, because their authenticity(真实性) can be confirmed. Students also find them more fascinating.
The loss of handwriting also may be a cognitive(认知的) opportunity missed. Several academic studies have found that good handwriting skills at a young age can help children express their thoughts better—a lifelong benefit.
It doesn’t take much to teach better handwriting skills. At some schools in Prince George’s County, elementary school students use a program called Handwriting Without Tears for 15 minutes a day. They learn the correct formation of manuscript letters through second grade, and cursive letters in third grade.
There are always going to be some kids who struggle with handwriting because of their particular neurological(神经系统的) writing, learning issues or poor motor skills. Educators often point to this factor in support of keyboarding.What is the author concerned about after 2012 Sat exams?
| A．Keyboarding. | B．Shorthand. |
| C．Handwriting. | D．Block letters. |
A poem by Robert mentioned in the passage is used to ____________.
| A．prove how valuable handwriting is |
| B．explain what a famous poet he is |
| C．show how unique his poem is |
| D．stress how fascinating the documents are |
The example of Handwriting Without Tears helps to argue that _____________.
| A．the schools are responsible for the loss of handwriting |
| B．the loss of handwriting is a cognitive opportunity missed |
| C．it doesn’t take much to teach better handwriting skills |
| D．the culture is turning from the written word to the typed one |
According to the author, when is a perfect time to learn handwriting?
| A．Kindergarten. | B．Primary school. |
| C．High school. | D．College. |
What is the author’s attitude towards this debate?
| A．Devotion. | B．Encouragement. |
| C．Critical. | D．Objective. |
A black hole is a place in space where gravity pulls so much that even light cannot get out. The gravity is so strong because matter has been squeezed into a tiny space. This can happen when a star is dying.
Because no light can get out, people can’t see black holes. Space telescopes with special tools can help find black holes. The special tools can see how stars that are very close to black holes act differently from other ones.
Black holes can be big or small. Scientists think the smallest black holes are as small as just one atom. These black holes are very tiny but have the mass of a large mountain. Mass is the amount of matter, or “staff”, in an object.
Another kind of black hole is called “stellar”(星球黑洞). Its mass can be up to 20 times more than the mass of the sun. There may be many stellar mass black holes in Earth’s galaxy. Earth’s galaxy is called the Milky Way.
The largest black holes are called “supermassive”(超大质量黑洞). These black holes have masses that are more than one million suns together. Scientists have found proof that every large galaxy contains a supermassive black hole at its center. The supermassive black hole at the center of the Milky Way galaxy has a mass equal to about four million suns and would fit inside a very large ball that could hold a few million Earths.
Scientists think the smallest black holes formed when the universe began. Stellar black holes are made when the center of a very big star falls in upon itself, or falls apart. When this happens, it exploded part of the star into space. Scientists think supermassive black holes were made at the same time as the galaxy they are in.
A black hole can not be seen because strong gravity pulls all of the light into the middle of the black hole. But scientists can see how the strong gravity affects the stars and gas around the black hole. Scientists can study stars to find out if they are flying around, or orbiting a black hole.
When a black hole and a star are close together, high-energy light is made. This kind of light cannot be seen with human eyes. Scientists use satellites and telescopes in space to see the high-energy light.The gravity of a black hole may become so strong that light cannot get out when ____________.
| A．the star is going to die |
| B．special tools are used on it |
| C．other stars come close to it |
| D．it is seen from the space telescopes |
According to the passage, which of the following is NOT true?
| A．A black hole can be very tiny but extremely heavy. |
| B．The gravity of a black hole holds all light in its center. |
| C．Scientists observe high-energy light through their own eyes. |
| D．Some small black holes came into being as early as the universe. |
Which can be inferred from the passage?
| A．Every galaxy must have a black hole. |
| B．A galaxy is the center of the universe. |
| C．A galaxy consists of a large group of stars and planets. |
| D．Earth’s galaxy is called the Milky Way. |
What does the last sentence in Paragraph 5 suggest?
| A．Neither the sun nor the earth is as heavy as a black hole. |
| B．There is only one supermassive black hole at the center of the Milky Way. |
| C．The supermassive black hole had existed before the Milky Way was formed. |
| D．There is a reason why the large black holes are called “supermassive”. |
The last two paragraph mainly focus on the question of _________.
| A．what a black hole is |
| B．how black holes form |
| C．how big black holes are |
| D．how scientists know about black holes |
A primary school in UK has banned Valentine’s Day cards because of concerns that young pupils spend too much time talking about boyfriends and girlfriends.
Ashcombe Primary School in WestonSuperMare，Somerset，has told parents that cards declaring love can be“confusing” for children under the age of 11，who are still emotionally and socially developing. In this month’s newsletter(通讯)，Peter Turner，the head teacher，warned that any cards found in school would be confiscated(没收)．He wrote：“We do not wish to see any Valentine’s Day cards in school this year. Some children and parents encourage a lot of talk about boyfriends and girlfriends. We believe that such ideas should wait until children are mature enough emotionally and socially to understand the commitment involved in having or being a boyfriend or girlfriend.”Mr.Turner said any families wanting to support the Valentine’s Day idea should send cards in the post or deliver them to home addresses by hand.
His views were endorsed by Ruth Rice,46，who has twins Harriet and Olivia at the school. She said，“Children at that age shouldn’t really be thinking about Valentine’s Day，they should be concentrating on their schoolwork.”They are at an age when they are impressionable(易受影响的)and most parents including myself are with Mr.Turner. “She added that the cards cause” too much competition. If someone gets a card and another doesn’t，then someone will be disappointed.
However，Rajeev Takyar,40，who has two children Jai,11，and Aryan，five，at the school，said he was “outraged”．He said，“There are schools that have banned conkers(栗子游戏)and snowballs，and now Valentine’s Cards.”I think banning the cards stops children from having social skills. How are they going to learn about relationships otherwise？It’s ridiculous. Alec Suttenwood，father of three children，said of the ban：“It’s totally ridiculous. Young children just send the cards to each other as friends and to their parents. It’s just a bit of harmless fun. There is no difference between this and Mother’s or Father’s Day.”Which of the following is the best title?
| A．Ban on Valentine’s Day cards at school is well received. |
| B．Ban on Valentine’s Day cards at school causes argument. |
| C．British children spend too much time talking about love. |
| D．A British high school bans Valentine’s Day cards. |
The underlined word “endorsed” means________.
| A．criticized | B．quoted |
| C．disapproved | D．approved |
What do you know about Harriet and Olivia?
| A．They will send Valentine’s Day cards this year. |
| B．They are strongly against the school’s decision. |
| C．They are of the same age. |
| D．They are the children of Rajeev Takyar. |
According to Rajeev Takyar，________.
| A．sending Valentine’s Day cards helps develop children’s social skills |
| B．banning Valentine’s Day cards will benefit children |
| C．the cards cause too much competition among children |
| D．children are too young to talk about love |
The newsletter by Peter Turner probably appeared on________.
| A．February 22 | B．February 6 |
| C．March 18 | D．August 1 |
Scientists in Mexico have just begun a new study of one of the world’s biggest pyramids: the Pyramid of the Sun, north of Mexico City. They’re putting lots of small, high-tech machines under the pyramid to try to unlock some of its secrets. For thousands of years, people have tried to uncover the secrets of the pyramids.
The people who built the pyramids made lots of secret doors and rooms to stop robbers from finding the treasures inside. However, there always have been some smart thieves in history. Now, almost all of Egypt’s pyramids have been robbed, including the Great Pyramid of Khufu, which is the largest pyramid in the world. It is the only one of the ancient wonders of the world that is still standing.
In AD 820, an Arab king named Abdullah AL Manum got a group of workers to dig their way into the Great Pyramid and have a look. Inside the pyramid, they found three rooms—the Queen’s Chamber, the Grand Gallery and the King’s Chamber. But to their surprise, the men didn’t find the treasures they wanted. The Queen’s and King’s Chambers were both empty! Where were the King’s mummy and his treasures? Had someone already taken them away? The huge stone doors at the pyramid’s entrance were still closed when AL Manum’s men went inside. How had the thieves got in and out?
Since then, many people have gone inside the Great Pyramid to have a look or to try to take things. But still, no other chambers or walkways have been found.
In 2002, an American team made the most recent visit to the Great Pyramid. Scientists sent a robot into the pyramid, but they only found a mysterious locked stone door.The first two paragraphs were written to show that ____.
| A．ancient Egyptian emperors were cruel |
| B．the Pyramid of the Sun is an unusual historic building |
| C．construction workers led a hard life in ancient Egypt |
| D．the secrets of the pyramids remain to be uncovered |
What is the purpose of making some secret doors to the pyramids? _______.
| A．To try to unlock some of its secrets |
| B．To stop robbers from finding the treasures inside |
| C．To refuse some visitors all over the world into it |
| D．To tell the truth to the people in the future |
Which of the following is NOT true to the Great Pyramid of Khufu?
| A．It is the largest pyramid in the world. |
| B．It is the only one of the ancient wonders that is still standing. |
| C．Abdullah AL Manum took the King’s mummy and his treasures away. |
| D．Scientists found a mysterious locked stone door to the Great Pyramid. |
What would be the best title for the text?
| A．The Pyramid of the Sun |
| B．The Great Pyramid of Khufu |
| C．A Mysterious Locked Stone Door |
| D．Unlocking the Doors of History of the Pyramid |
Talking plants might sound like characters in a fairy tale. But recent scientific studies have shown that plants communicate with each other and with other living things in a surprising number of ways. To understand them, scientists say, we just have to learn their language. Farmers are especially interested in what plants have to say.
“Plants are able to communicate with all sorts of organisms (有机体). They can communicate with giant bacteria, with other plants and with insects. They do this chemically，” said Cahill, an Ecology Professor of the University of Alberta in Canada.
Plant scientists are just beginning to understand this chemical “language”. Cahill says studies have shown, for example, that plants can evaluate (评估) conditions in their immediate environment and take appropriate actions. Plants have an ability, for example, to signal pain or discomfort caused by anything from temperature extremes to an insect attack. Jack Schultz, a professor of chemical ecology at the University of Missouri, says when a plant senses that it's being eaten, it cannot walk away from trouble; on the contrary, it will release a chemical vapor(蒸汽) that alerts other plants nearby.
“Their language is a chemical language, and it involves chemicals that move through the air that are easy to be changeable, and most of all are smells that we are familiar with，” Schultz explained.
“All plants responded to the attack by changing their chemistry to defend themselves，” Schultz recalled. “But we were quite surprised to find that nearby plants also changed their chemistry to defend themselves, even though they were not part of the experiment.”
Studies have also shown that plants under attack release pleasant chemicals. Those chemicals attract friendly insects that attack the pests eating the plant.
In the end, plants' ability to communicate their needs—and our ability to understand them—could help farmers reduce the use of poisonous chemicals, cut operating costs and limit damage to the environment.The recent scientific studies have shown that plants can ______.
| A．communicate with other living things in a chemical way |
| B．hardly react to any sudden change in temperature |
| C．use a very special chemica1 language which is familiar to us |
| D．respond to the attack by giving off poisonous chemicals |
When being eaten by an insect, the plant will ________.
| A．walk away from trouble |
| B．change its chemistry to kill the insect |
| C．release a chemical vapor to “ask” other plants for help |
| D．give off nice chemicals to attract friendly insects killing the pest |
The underlined word “alert” most probably means “______”．
| A．warn | B．protect |
| C．threaten | D．allow |
Which would be the best title for the passage?
| A．Communication between Plants |
| B．A Chemical “Language” |
| C．Plants Can Talk |
| D．How Plants Protect Themselves |
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