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A new study suggests that thick crustal plugs and ...

A new study suggests that thick crustal plugs and weakened mineral grains may explain a range of relatively speedy moves among tectonic plates around the world, from Hawaii to East Timor. Traditionally, scientists believed that all tectonic plates were pulled by subducting slabs—which resulted from the colder, top boundary layer of the Earth's rocky surface becoming heavy and sinking slowly into the deeper mantle. Yet that process does not account for sudden plate shifts. Such abrupt movement requires that slabs detach from their plates, but doing this quickly is difficult since the slabs should be too cold and stiff to detach. According to the study, there are additional factors at work. Thick crust from continents or oceanic plateau is swept into the subduction zone, plugging it up and prompting the slab to break off. The detachment process is then accelerated when mineral grains in the necking slab start to shrink, causing the slab to weaken rapidly. The result is tectonic plates that abruptly shift horizontally, or continents suddenly bobbing up. The passage is primarily about

A、the results from new research.

B、the weaknesses of mineral grains.

C、how crust is subducted on the earth’s surface.

D、the types of tectonic plates.

提问人：网友lnslta2 发布时间：2022-01-07

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更多“A new study suggests that thic…”相关的问题

第1题

The author of the passage suggests that the developments in the study of Parkinson's disea

se can help______.

A．prevent Parkinson's

B．alleviate the causes of Parkinson's

C．find new avenues for treatment of' Parkinson's

D．cure Parkinson's

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第2题

听力原文：A new study suggests that very young children who watch a lot of television may h

听力原文： A new study suggests that very young children who watch a lot of television may have attention problems later in school.

Children with attention problems cannot sit still or control their actions. They talk too much, lose things, forget easily and are not able to finish tasks.

The new study tested the idea that television watching by very young children is linked to attention problems by the age of seven. It involved more than 1,300 children. There were two groups of children, aged one and three. Researchers asked the parents how often the children watched television. The parents also described their children's actions at the age of seven using a method that can tell if someone suffers from attention problems.

The children who watched a lot of television at an early age were most likely to have attention problems. Every hour of watching television increased the chances of having attention problems by about ten percent. For example, children who watched three hours a day were thirty percent more likely to have attention problems than those who watched no television.

One of the researchers said there are other reasons why children should not watch television. Earlier studies have linked it with children becoming too fat and too aggressive. Other experts say the new study is important, but more work needs to be done to confirm the findings and better explain the cause and effect.

(30)

A．Attention problems.

B．Participating problems.

C．Communication problems.

D．Speaking problems.

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第3题

听力原文：What is the shape of the universe？ The question has baffled and obsessed humankin

听力原文： What is the shape of the universe？ The question has baffled and obsessed humankind since civilization first gazed up towards the heavens. The world has yet to receive a satisfactory explanation. Now a new study hints at a possible answer. Contrary to the traditional interpretation, the study suggests the universe is finite and bears a rough resemblance to a soccer ball, or to put it more accurately, the universe looks like a 12-sided volume bounded by pentagons. Based on the new theory, a model has been made to help illustrate the alleged shape of the Universe. If proven by further evidence and inspection, the model would represent a major discovery about the nature of the cosmos.

"What makes the discovery exciting now is it's not a matter of idle speculation," said Jeffrey Weeks, a US mathematician, "There's real data to look at and there's the great possibility of getting a definite answer." Weeks has announced hints that the Universe is actually relatively small, with a hall-of-mirrors illusion which tricks us into thinking that the space stretches on forever.

While studying cosmic background radiation observed by NASA's Wilkinson Microwave Anisotropy Probe, Jeffrey Weeks, together with a team of French cosmologists, arrived at this new discovery. It is still in question whether the theory is correct. However, the idea itself is indeed appealing and inspiring.

(26)

A．A new discovery in Mathematics.

B．A new program conducted by NASA.

C．A new theory on the shape of the universe.

D．A new planet detected in space.

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第4题

Malnutrition （营养不良)A new World Bank report warns that children who don't get enough go

Malnutrition (营养不良)

A new World Bank report warns that children who don't get enough good food in the first two years of life suffer lasting damage. They may be underdeveloped or underweight. They may suffer from poor health or limited intelligence. In addition, poorly nourished children are more likely to drop out of school and earn less money as adults.

The report notes that too little food is not the only cause of poor nutrition. Many children who live in homes with plenty of foods utter for other reasons. For example, the study says that mothers often fail to give their newly born babies their first breast milk. This milk-like substance is called colostrum. It is full of nutrients that improve a baby's ability to fight infections and disease.

The study also links malnutrition to economic growth in poor countries. A lack of nutrition in early children can cost developing nations up to three percent of their yearly earnings. Many of these same countries have economies that are growing at a rate of two or three percent yearly. The study suggests that poor countries could possibly double their economic growth if they improved nutrition.

Africa and South Asia are affected the most by poor nutrition. The study says about half of all children in India do not get enough good food. The World Bank study also notes that rates of malnutrition in South Asia are almost double those in central and southern Africa. Other parts of world are also severely affected, including Indonesia, Uzbekistan, Yemen, Guatemala and Peru.

The study recommends that developing countries change their policies to deal with malnutrition. Instead of directly providing food, the study suggests educational programs in health care.

World Bank nutrition specialist Meera Shekar said the period of life between pregnancy and two years was extremely important. Governments with limited resources should take direct action to improve nutrition for children during this period.

What is NOT the symptom of lasting damage？

A．They may not get enough good nutrition in the first two years.

B．They may be underdeveloped or underweight.

C．They may feel painful from poor health or limited intelligence.

D．They mybe more likely to drop out of school or earn less money as adults.

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第5题

听力原文：A new study from the University of New South Wales has discovered that during the

听力原文： A new study from the University of New South Wales has discovered that during the working week, Australian fathers only spend an average of just over a minute each day alone with their children. Australian mothers, on the other hand, spend 3 hours a week purely looking after their children. On much greater disparity than in other countries, like America, Denmark, Italy and France (Q14) , working couples divide the child-care more evenly. According to the author of the study, traditionally, Australian fathers appear to like the fun aspects of parenthood, but stay away from daily child-care activities. So while they tend to be happy taking the kids to the park or to sports event, they are unlikely to participate regularly in feeding, bathing, or taking the kids to school (Q15). In short, Australian parenting is seen as a woman's job and a man's hobby. However, the last twenty years have seen the arrival of the so-called "new man"— the man who is willing to share the house-work and child-care (Q16). The "new man" has a picture of his children on his computer desktop at work; he never misses the kids' school plays and he passes on a drink after work so that he can get home in time to read their bedtime story. This new study suggests that the new man feels a little more at home in Europe than in Australia (Q17). Indeed, a poll conducted in the UK indicated that almost 70% of British women thought that men were as good at raising children as women.

According to the passage, mothers in______ spend more time looking after children.

A．France

B．America

C．Denmark

D．Australia

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第6题

Europa’ swateryunderworld Europa, one of Jupiter’s 63 known moons,looks bright and icy on

Europa’ swateryunderworld

Europa, one of Jupiter’s 63 known moons,looks bright and icy on the surface. But appearances can be deceiving: Mileswithin its cracked, frigid shell, Europa probably hides giant pools of liquidwater. Where scientists find liquid water, they hope to find life as well.

Since we can’t go diving into Europa’sdepths just yet, scientists instead have to investigate the moon’s surface forclues to what lies beneath. In a new study, scientists investigated one group of strange ice patterns on Europa and concluded that the formations mark the top of an underground pool that holds as much water as the U.S. Great Lakes.

Pictures of Europa, which is slightlysmaller than Earth’s moon, clearly show a tangled, icy mishmash of lines andcracks known as “chaos terrains.” These chaotic places cover more than half ofEuropa. For more than 10 years, scientists have wondered what causes theformations. The new study suggests that they arise from the mixing of vastunderground stores of liquid water with icy material near the surface.

For scientists who suspect that Europaalso may be hiding life beneath its icy surface, the news about the new lake isexciting.

“It would be great if these lakesharbored life,” Britney Schmidt, a planetary scientist who worked on the study,told Science News. “But even if they didn’t, they say that Europa is doingsomething interesting and active right now.”

Schmidt,a scientist at the University of Texas at Austin, and her colleagueswanted to know how chaos terrains form. Since they couldn’t rocket to Europa tosee for themselves, they searched for similar formations here on Earth. Theystudied collapsed ice shelves in Antarctica and icy caps on volcanoes in Iceland. Thosefeatures on Earth formed when liquid water mixed with ice. The scientists nowsuspect something similar might be happening on Europa: that as water and iceof different temperatures mingle and shift, the surface fractures. This wouldexplain the jumbled ice sculptures.“Fracturing catastrophically disruptsthe ice in the same way that it causes ice shelves to collapse on Earth,”Schmidt told Science News. She and her team found that the process could becausing chaos terrains to form. quickly on Europa.

The new study suggests that on thismoon, elements such as oxygen from the surface blend with the deep bodies ofwater. That mixture may create an environment that

supports life.

The liquid water of an underground pool of Europa is estimated xxxxx of the US Greatlakes.

A. Right

B. Wrong

C. Not mention

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第7题

We all know whether we are left-handed or right-handed; hardly any of us know whether we a

re left-faced. Yet according to Professor Karl Smith of the University of Wisconsin we are all almost【B1】______one or the other. Right-faced people are more【B2】______than left-faced people, and there is a striking【B3】______between left-facedness and musical talent. Beethoven was left-faced.【B4】______were Brahms, Schubert, Wagner, Tchaikovsky and the【B5】______of other well-known living performers of all kinds of music. The idea of facedness【B6】______from many years of computerized study of peoples lip, tongue and jaw movement【B7】______they were talking. Smith and his colleagues found that in most people one side of the face was more【B8】______than the other. There are other【B9】______of facedness, some of which can be【B10】______in static pictures; in right-faced people the right-side of the face is【B11】______compressed between jaw and brow; the right eyebrow tends to be higher; dimples and wrinkles are less【B12】______than on the left. From a study of more than 500 people Smith found that the【B13】______of right-faced people【B14】______about nine in ten among Americans to two in three among Acapulco Mexicans. The fact that【B15】______twins were always both right-faced or left-faced suggests a【B16】______origin for facedness. Those talented musical artists—"singers and instrumentalists who perform. classical, operatic, country and jazz music are almost without exception left-faced." Smiths findings【B17】______with theories that the right hemisphere of the brain(which controls the left side of the face)is【B18】______for musical performance, the left hemisphere for【B19】______. The idea of facedness, he says, "suggests new【B20】______to the study of all aspects of cerebral dominance and its relation to handedness and speech disabilities".

【B1】

A．hardly

B．certainly

C．accordingly

D．possibly

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第8题

HELPING INTERNATIONAL STUDENTS MAKE FRIENDSOne study in the United States found that thi

HELPING INTERNATIONAL STUDENTS MAKE FRIENDS

One study in the United States found that thirty- eight percent of foreign students said they had no close American friends.

Elisabeth Gare is teaches in the Department of Comunication Studies at Baruch College in NewYork. She says efforts on how to improve relationships between foreign and American students have yet to be studied in detail. But she says these efforts should begin with the college or university, and that these institutions have been working harder.

Ms.Gare is suggests that students should be encouraged to take part in different activities,such as taking walks, going on bike rides, field or camping trips, and attending parties,sporting events or film festivals. She says such activities should be held repeatedly through out the school term to bring students together. She al so suggests that foreign students share housing with American students.

She says if the new students make friends as they begin school, they will come to feel part of the life and traditions of the university, as well as create long lasting friendships throughout their university career.(判断)

1.A study showed that 38% foreign students had many close American friends.

2.Universities have been working on improving the relationships between foreign and Americanstudents.

3.Ms. Gareis thinks taking part in some activities is a good way to improve the relationship.

4.Ms.Gareis says the activities shouldn’t be held repeatedly throughout the term.

5.Making friends when they begin school is helpful for the students to create long lasting friendships.

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第9题

A happy marriage apparently is good medicine, but hostile spouses may be harmful to one an

others health. Couples in conflicted marriages take longer than the happily married to heal from all kinds of wounds, from minor scrapes(擦伤)or athletic injuries to major surgery, suggests a study carried out over the weekend. And the health toll taken by a stressful job seems to be eased when the worker has a pleasurable home life. This new research, reported at an American Psychosomatic Society meeting, adds to growing evidence that marriage has an impact on health. In the wound healing study, 42 couples agreed to let researchers use a device to create several minor wounds on their skin in two sessions about two months apart. The first time, couples were told to discuss a neutral topic; the next time they were given half an hour to resolve an issue or two on which they disagreed. Their discussions were monitored. Couples took longer to heal when asked to discuss points of conflict than neutral issues. Hostile couples—attacking each other with criticism, sarcasm—healed the slowest. It took them 40% longer, or two more days, to heal, and they also produced less of the proteins linked to healing.

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第10题

Now read the passageand decide if the following statements are TRUE （T) or FALSE （F).

Now read the passageand decide if the following statements are TRUE (T) or FALSE (F). HELPING INTERNATIONAL STUDENTS MAKE FRIENDS One study in the United States found that thirty-eight percent of foreign students said they had no close American friends. Elisabeth Gareis teaches in the Department of Communication Studies at Baruch College in New York. She says efforts on how to improve relationships between foreign and American students have yet to be studied in detail. But she says these efforts should begin with the college or university, and that these institutions have been working harder. Ms. Gareis suggests that students should be encouraged to take part in different activities, such as taking walks, going on bike rides, field or camping trips, and attending parties, sporting events or film festivals. She says such activities should be held repeatedly throughout the school term to bring students together. She also suggests that foreign students share housing with American students. She says if the new students make friends as they begin school, they will come to feel part of the life and traditions of the university, as well as create long lasting friendships throughout their university career.

1. A study showed that 38% foreign students had many close American friends.()

2. Universities have been working on improving the relationships between foreign and American students.()

3.Ms. Gareis thinks taking part in some activities is a good way to improve the relationship.()

4.Ms. Gareis says the activities shouldn’t be held repeatedly throughout the term.()

5.Making friends when they begin school is helpful for the students to create long lasting friendships.()

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