Siri. The intelligent assistant that helps you get things done. All you have to do is ask.
Now you can use your voice to use your iPhone 4S. Just talk to Siri as you would to a person: “Do I need an umbrella?” or “Where’s the closest ATM?” Siri not only understands what you say, it knows what you mean. It figures out the right apps to use to find the right answer. Then, just like a personal assistant, it answers you. Siri makes phone calls, sends messages, schedules meetings, sets reminders, and more. How much more? Just ask, and Siri tells you that, too.
Dual-core A5 chip: the most powerful iPhone ever.
Two cores in the A5 chip provide up to two times more power and up to seven times faster graphics. And you’ll feel the effects. iPhone 4S is quick and responsive, which makes all the difference when you’re launching apps, surfing the web, gaming, an doing just about everything. And no matter what you’re doing, you can keep on doing it. Because the A5 chip is so power-efficient, iPhone 4S has outstanding battery life.
FaceTime. It’s even better face-to-face.
FaceTime of iPhone 4S lets you hear a voice and see the face that goes with it—iPhone to iPhone, iPad 2, iPod touch, or Mac over Wi-Fi. So no matter where they are, no matter where you are, you’ll always be there. Making a FaceTime call is just as easy as making a phone call. And it’s even easier with Siri. Just tell Siri “FaceTime with Mom” and you show up, smile and wave hello. You’ll never miss a big event, an important meeting or a good laugh. And who wouldn’t be happy to see your face?
小題1:The passage is mainly about __________.
A．how to use iPhone 4SB．some models of iPhone 4S
C．some special uses of iPhone 4SD．how to understand some pictures
小題2:What is special about Siri?
A．It can take photos.B．It can make videos.
C．It can write messages.D．It can answer questions.
小題3:Which of the following helps iPhone 4S to perform fast?
A．B．C．D．
小題4:Which of the following is NOT TRUE about FaceTime?
A．It can be used together with Siri.
B．It allows you to see the other person’s face.
C．It allows you to hear the other person’s voice.
D．It can only be used between iPhone and iPhone.

小題1:C
小題2:D
小題3:B
小題4:D

試題分析：文章是關(guān)于iPhone 4S的一篇科技短文，主要介紹了iPhone 4S的一些特殊功能。這篇文章比較新穎，比較貼近生活。
小題1:文章主要從Siri，Dual-core A5 chip和FaceTime三個方面介紹了iPhone 4S的一些特殊功能，故選C。
小題2:根據(jù)“just like a personal assistant, it answers you.”可知，Siri可以根據(jù)用戶提問的問題查找相關(guān)應(yīng)用程序并作出回答。故選D。
小題3:根據(jù)“Two cores in the A5 chip provide up to two times more power and up to seven times faster graphics. ...iPhone 4S is quick and responsive”可知，幫助加快iPhone 4S運行的是A5雙核處理器，故選B。
小題4:根據(jù)“iPhone to iPhone, iPad 2, iPod touch, or Mac over Wi-Fi.”可知，F(xiàn)aceTime可以在iPhone, iPad 2, iPod touch, 和Mac之間通用，故選D。
練習(xí)冊系列答案
相關(guān)習(xí)題

科目：高中英語 來源：不詳 題型：閱讀理解

American researchers found females are the more talkative sex because of a special “l(fā)anguage protein(蛋白質(zhì))” in the brain.
The study, conducted by neuroscientists (神經(jīng)學(xué)家)and psychologist from the University of Maryland, concluded that women talked more because they had more of the Foxp2 protein. The research, published in the Journal of Neuroscience, found that higher levels were found among humans that were women but in rats that were males. Their findings came after it was previously claimed that ladies speak about 20,000 words a day – over 13,000 more than men. “This study is one of the first to report a sex difference in the expression of a language-associated protein in humans or animals,” said Prof Margaret McCarthy, who led the study. In their study, the researchers attempted to determine what might make male rats more vocal than their female friends.
They separated four-day-old rats from their mothers and then counted the number of times they cried out in the “ultrasonic range”, the frequencies higher than humans can hear, over five minutes. While both sexes called out hundreds of cries, the males called out twice as often, they found. But when the pups were returned to their mother’s cage, she fussed over her sons first. Tests conducted on the parts of the brain known to be associated with vocalcalls showed the male pups have up to twice as much Foxp2 protein as the females. The researchers then increased the production in the brains of female pups and reduced it in males. This led to the female rats crying out more often and their mothers showing more interest to them. In contrast, males became less “talkative”.
The researchers then tested samples from ten children, aged between three and five, which showed that females had up to 30 per cent more of the Foxp2 protein than males, in a brain area key to language in humans.
“Based on our observations, we assume higher levels of Foxp2 in girls and higher levels of Foxp2 in male rats is an indication that Foxp2 protein levels are associated with the more communicative sex,” said Prof McCarthy. “Our results imply Foxp2 as a component of the neurobiological basis of sex differences in vocal communication in mammals. “
小題1:From the second paragraph, we can learn that ________.
A．women always speak more words than men
B．men and male rats have low levels of language protein
C．women and male rats have similar levels of Foxp2
D．McCarthy isn’t the first to find females more talkative
小題2:The underlined phrase “fussed over” in the third paragraph probably means______.
A．paid attention toB．related toC．put pressure onD．counted on
小題3:The researchers carried out the experiments on rats in order to _______.
A．test which part of the brain is key to language in rats and humans
B．prove the levels of Foxp2 protein in humans and rats are different
C．determine the reason why female rats are more talkative than male rats
D．discover the association between Foxp2 protein and vocal communication
小題4:Which of the following can be the best title for the passage ?
A．Tests on humans and rats
B．Why women are the talkative sex
C．Sex differences in Foxp2 protein
D．Foxp2 protein determines oral ability

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

We are always told that TV is not good for us. If it is true, how come the TV-addicted kids of our young generation nowadays are much smarter than we are? In my family, the only persons who can work the TV remote control well are the children.
Probably TV really educates us. For example, we can learn a very useful medical fact: A man that has been shot always has time to speak a broken sentence when he is dying. “The killer was…” (dies)
But I suppose the biggest things that we learn from TV can be regarded as “Life Skills”. Bad things simply happen on either stormy or dark nights. Emotional breakdowns make people wander in the heavy rain without raincoats or umbrellas. And contrary to the scientists, the crack of lightning and the accompanying flash come on at exactly the same time, wherever the scenes are.
I’ve even got to know useful geographical facts from science-fiction shows: Aliens only speak the language of English no matter which planet they come from.
To make good use of something that we learn from TV can make our security better. Consider these truths. When you are really attacked by 20 bad guys, you needn’t worry about your being outnumbered. The criminals will hang back and take turns to approach you in ones and twos just so you can conveniently defeat them all. Bad guys who are completely covered in black clothes always remove their black masks to reveal that they are in fact, aha, women.
TV often teaches us a lot of important information as well about escaping from danger. Watch and learn. (1) If anyone is running after you down a passage, you will find that boxes have been conveniently placed near all the walls you need to jump over. (2) If you are tall and handsome, you can run from any number of armed criminals, and every shot will miss you.
Be warned, however, if your name card says “henchman” (幫兇) and you are part of a group of plain-looking people trying to catch a handsome individual, a single shot will kill you. But don’t be anxious: TV also delivers useful information for bad guys. All cars are inflammable (易燃的) and have amazing shock absorbers that enable them to fly into the air and land without damage — except police cars.
TV even teaches us about TV. Whenever anyone turns on a TV, it shows a news flash about someone they know. They then turn the box off immediately after that news item.
小題1: When the writer says “A man that has been shot always has time to speak a broken sentence when he is dying” (Paragraph 2), he shows his________.
A．humorB．sympathyC．deep concernD．medical knowledge
小題2: We can learn from Paragraph 3 that in the real world________.
A．bad things cause people to break down in the rain
B．bad things never happen on dark and stormy nights
C．people with emotional problems like to walk in the rain without umbrellas
D．you can’t hear the crack of lightning and see the accompanying flash exactly at the same time
小題3: On TV what usually happens when a person turns it on?
A．The program shown is always about the importance of TV.
B．The person always turns off the TV when it’s time for news.
C．The news shown is always about someone the person knows.
D．TV always shows news about famous people.
小題4: What’s the main idea of this passage?
A．Life skills can be learned from TV.
B．What happens in TV is quite different from reality.
C．Watching TV makes people more creative.
D．TV plays an important role in society.
小題5: The writer of this passage takes a(n) ________ attitude towards TV plays.
A．positiveB．casualC．negativeD．indifferent

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Some students get so nervous before a test; they do poorly even if they know the material. Sian Beilock has studied these highly anxious test-takers.
Sian Beilock: “They start worrying about the consequences. They might even start worrying about whether this exam is going to prevent them from getting into the college they want. And when we worry，it actually uses up attention and memory resources. I talk about it as your cognitive horsepower that you could otherwise be using to focus on the exam.”
Professor Beilock and another researcher，Gerardo Ramirez，have developed a possible solution. Just before an exam，highly anxious test-takers spend ten minutes writing about their worries about the test.
Sian Beilock: “What we think happens is when students put it down on paper，they think about the worst that could happen and they reappraise the situation. They might realize it’s not as bad as they might think it was before and，in essence(本質(zhì)上)，it prevents these thoughts from popping up when they’re actually taking a test.”
The researchers tested the idea on a group of twenty anxious college students. They gave them two short math tests. After the first one, they asked the students to either sit quietly or write about their feelings about the upcoming second test.
The researchers added to the pressure. They told the students that those who did well on the second test would get money. They also told them that their performance would affect other students as part of a team effort.
Professor Beilock says those who sat quietly scored an average of twelve percent worse on the second test. But the students who had written about their fears improved their performance by an average of five percent.
Next, the researchers used younger students in a biology class. They told them before final exams either to write about their feelings or to think about things unrelated to the test.
Prefessor Beilock says highly anxious students who did the writing got an average grade of  B+，compared to a B－ for those who did not.
Sian Beilock: “What we showed is that for students who are highly test-anxious，who’d done our writing intervention(排解)，all of a sudden there was no relationship between test anxiety and performance. Those students most likely to worry were performing just as well as their classmates who don’t normally get nervous in these testing situations.”
But what if students do not have a chance to write about their fears immediately before an exam or presentation? Professor Beilock says students can try it themselves at home or in the library and still improve their performance.
小題1:Which of the following is TRUE?
A．The result in the math test agrees with that in the biology test.
B．In the first math test, students who sat quietly performed better.
C．In the second math test, students who wrote about their feelings did worse.
D．Some college students are highly anxious test-takers while others are not in the tests.
小題2:What may happen if students have the problem of test anxiety?
A．Test anxiety is sure to cause students to fail the test.
B．Test anxiety can improve students’ performance to some degree.
C．Students’ attention and memory resources run out when worried.
D．Students may not be admitted into their favorite college if worried
小題3:The result of the research suggests that ________．
A．proper amount of burden may turn out to be a good thing
B．facing the fears bravely may help one to achieve more
C．a(chǎn)voiding facing the problem may contribute to relaxation
D．taking no action before difficulty may result in success
小題4:What is the main idea of the passage?
A．It is important for students to overcome test anxiety.
B．Anxious students overcome test anxiety by writing down fears.
C．It is a common practice for students being worried before a test.
D．Being worried before tests does harm to students’ performance.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

As people in Beijing and northern China struggle with severe air pollution this winter,the toxic(有毒的)air is also making life hard for plants and even food crops of China．
"in the last 50 years there has been a 1 6-fold increase in ozone(臭氧)pollution”in the Beijing area，said Hanqin Tian of Auburn University in Alabama,who studies the effects of China's pollution and climate change on plants．
Ozone is particularly harmful to plants because it damages the pores(氣孔)  on leaves，called stomata,which plants use to regulate how much water evaporates from the leaves．That，in turn，affectS how much water a plant must take up through its roots．Changes in water uptake by plants have been documented in other parts of the world，including the United States，as having major impacts on regional groundwater and surface water supplies．
In studies of the long-term productivity of plants，Hanqin Tian and some of his colleagues show that ozone pollution,along with climate change，has been lowering plant productivity in China,which reduces the amount of carbon and other pollutants that the plants Can absorb to fight all the emissions from the burning offossil fuels．
The worst effects on plants are likely to be in areas where the growing pollution problem is just fairly new, said Arthur Chappelka, also a plant researcher at Auburn University．Some plants are more resistant to pollutants than others，he said，and the plants that are living today in long-polluted urban areas are likely to be only those that are very pollution tolerant．
Away from the cities, however, where crops are necded to feed China’s yast population, the effeets of the growing pollution on crops is a significant concern.
“In some ways it affects the crop production and food securiy of China,”said Hanqin Tian.“Air quality is really important for human health, plants and ecosystem and sustainability.”
The problem is bound to get worse as China continues to develop economically, he said, and so he and other researchers continue to urge the Chinese government to take action to reduce emissions from cars and industries.
小題1:ozone does harm to plants mainly by ________.
A．exposing them to strong sunlight
B．damaging the structure of their leaves
C．a(chǎn)dding more pores to the roots
D．making the land unfit for the plants to grow
小題2:Which of the following statement does Hanqin Tian support?
A．Ozone pollution has increased 1 6 times in the past 30 years．
B．Ozone pollution has lowered plant productivity alone．
C．Plants can take in a large amount of carbon and other pollutants．
D．The toxic air has few effects on food supply in China．
小題3:What Can we infer from the passage?   
A．Healthy foods are not available in Beijing．
B．Some kinds of plants aren’t affected by air pollution．
C．Crops in China are hard to feed its large population．
D．People should stop developing economically
小題4:According to the passage，the Chinese govemment should
A．care more about developing economy
B．reduce the number of cars and industries
C．continue to make more researches
D．take measures to reduce carbon emissions
小題5:What′S the best title of the passage?
A．Polluted air damages plants and crops
B．Air pollution is becoming more serious
C．China’s air pollution and climate changes
D．Food security in China

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

 Waste can be seen everywhere in the school. Some students ask for more food than they can eat and others often forget to turn off the lights when they leave the classroom. They say they can afford these things. But I don’t agree with them.
Waste can bring a lot of problems. Although China is rich in some resources(資源), we are short of(缺乏) others, for example, fresh water(淡水). It is reported that we will have no coal(煤) or oil to use in 100 years. So if we go on wasting our resources, what can we use in the future and where can we move? Think about it. I think we should say no to the students who waste things every day. Everybody should stop wasting as soon as possible.
In our everyday life, we can do many things to prevent waste from happening, for example, turn off the water taps(水龍頭) when we finish washing, turn off the lights when we leave the classroom, try not to order more food than we need, and so on. Little by little, everything will be changed. Waste can be stopped one day, if we do our best.
小題1:From the passage we know that some students often _______ in the school.
A．eat too muchB．don’t work hardC．waste thingsD．throw rubbish everywhere
小題2:Which is not mentioned in this passage?
A．Fresh water.B．Forest.C．Oil.D．Coal.
小題3:What may happen in 100 years?
A．We may still have enough oil.B．We may still have enough coal.
C．We may have a little oil.D．We may have no coal or oil to use.
小題4:Which is the best title of this passage?
A．Stop WastingB．School life
C．Waste in the SchoolD．Rich Resources in China

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

The Segway Human Transporter was invented by Dean Kamen．It is a two-wheeled vehicle designed for a single rider standing upright over its single axle（軸） and navigate using a set of handlebars resembling those on a bicycle．Electrically powered, it could travel over 15 miles on a single charge and reach speeds up to twelve miles per hour．Its speed and direction can be controlled by riders' changing their weights．
A college dropout and self-taught engineer, Kamen already held over 100 patents for his inventions when he developed the one he hoped would revolutionize short-distance travel．While still in college, Kamen started developing the medical devices （設(shè)備） that made his name．Later, he changed focus to the challenges faced by wheelchair users．His robotic wheelchair known as IBOT could climb stairs．This robot ended up paving the way for the Segway．
Before showing his most recent invention, Kamen had kept it a top secret for months．When it turned out to be little more than a motor scooter, many publicly expressed their disappointment．On closer examination, however, even his critics（批評家） had to admit that the vehicle was an engineering achievement．It answered the prayers of anyone who is worn out when walking downtown．Not everyone welcomed the Segway's arrival, though．Some complained it was too expensive, while others said it would further weaken the average American ' s fitness．A Japanese inventor even accused Kamen of stealing the idea for the Segway from him．
Despite the controversy, the U．S．postal service began using Kamen's invention a month after its appearance, and a factory was built with plans to produce about 40,000 Segways every month．The argument is still on whether the Segway will be remembered as the greatest invention since the light bulb, or just another forgettable electronic device．Anyway, trips to the local supermarket will never be the same again．
小題1:Which statement best describes the critics' reaction to the Segway?
A．Nothing but an electrical device．
B．A disappointing engineering mistake．
C．An expensive and disappointing invention．
D．Disappointing, but still a successful device．
小題2:Which is not a feature of the Segway?
A．One person at a time can ride on it．
B．It has two wheels with a single axle．
C．It is powered by electricity and can go up to 12mph．
D．Riders increase the speed by moving the handlebars
小題3:Some people expressed dissatisfaction with the Segway because of its______.
A．high costB．danger to traffic
C．being difficult to useD．contribution to laziness
小題4:Shortly after the Segway appeared, there were _________.
A．hopes for a larger model of it
B．no plans to do anything more with it
C．some discussions on the unforgettable device
D．plans to make tens of thousands of them a month

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Astronomers have captured(捕獲) the first direct image of a planet being born.
Adam Kraus, of the University of Hawaii’s Institute for Astronomy, said the planet is being formed out of dust and gas circling a 2-million-yea-old star about 450 light years from Earth.
The planet itself, based on scientific models of how planets form, is believed to have started taking shape about 50,000 to 100,000 years ago.
Called LkCa 15b, it’s the youngest planet ever observed. The previous record holder was about five times older.
Kraus and his colleague, Michael Ireland from Macquarie University and the Australian Astronomical Observatory, used Keck telescopes on Mauna Kea(a volcano on the island of Hawaii, US) to find the planet. Kraus presented the discovery Wednesday at NASA’s Goddard Space Flight Center in Maryland.
Observing planets while they’re forming can help scientists answer questions like weather planets form early in the life of a star or later, and whether they form relatively close to stars or father away.
Planets can change orbits(軌道) after forming, so it’s difficult to answer such questions by studying older planets.
“These very basic questions of when and where are best answered when you can actually see the planet forming, as the process is happening right now,” Kraus said.
Scientists hadn’t been able to see such young planets before because the stars they’re circling around outshine(光亮強過) them. Kraus and Ireland used two techniques to overcome this problem.
One method, which is also used by other astronomers, was to change the shape of the telescope mirrors to remove light distortion(扭曲) created by the Earth’s atmosphere. The other method they used, which was unique, was to put masks with several holes over most of the telescope mirrors. The combination of these techniques allowed the astronomers to obtain high-quality images that let them see the planet next to the bright star.
The star LkCa 15—the planet is named after its star—was the team’s second target. They immediately knew they were seeing something new, so they plan to gather more data on the star.
小題1:The research on younger planets helps scientists _____________.
A．study why planets change orbits after forming
B．understand how planets move around their stars
C．a(chǎn)nswer questions about the age of stars and planets
D．know the relationship between planets and their stars
小題2:Why are young planets like LkCa 15b hard to discover?
A．Their stars are brighter than them..B．They are very far from the earth.
C．They are generally too small.D．They rarely form.
小題3:According to the text, Kraus and Ireland _____________.
A．have been working in the same university
B．observed the planet on a volcano in Hawaii
C．used two new methods in the observation
D．cut holes in the mirrors when observing
小題4:Which of the following would be the best title for the text?
A．Youngest planet seen as it’s forming.
B．Planet 450 light years away discovered.
C．World’s first direct image of a planet taken.
D．New technique helps discover young planets.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

What makes a person a scientist？Does he have ways or tools of learning that are different from those of others？The answer is “no”. It isn’t the tools a scientist uses but how he uses these tools which make him a scientist. You will probably agree that knowing how to use a power is important to a carpenter(木匠).You will probably agree，too，that knowing how to investigate(調(diào)查)，how to discover information，is important to everyone. The scientist，however，goes one step further；he must be sure that he has a reasonable answer to his questions and that his answer he gets to many questions is into a large set of ideas about how the world works.?
The scientist’s knowledge must be exact. There’s no room for half right or right just half the time. He must be as nearly right as the conditions permit. What works under one set of conditions at one time must work under the same conditions at other times. If the conditions are different，any changes the scientist observes in a demonstration(實證)must be explained by the changes in the conditions. This is one reason why investigations are important in science. Albert Einstein，who developed the Theory of Relativity，arrived at this theory through mathematics. The accuracy(正確性)of his mathematics was later tested through investigation. Einstein’s ideas were proved to be correct. A scientist uses many tools for measurements. Then the measurements are used to make mathematical calculations(計算)that may test his investigations.
小題1:What makes a scientist according to the passage？
A．The tools he uses.B．His ways of learning.
C．The way he uses his tools.D．The various tools he uses.
小題2:“...knowing how to investigate，how to discover information，is important to everyone.” The writer says this to show_______.
A．the importance of information
B．the difference between scientists and ordinary people
C．the importance of thinking
D．the difference between carpenters and ordinary people
小題3: A sound（合理的） scientific theory should be one that_______.
A．works under one set of conditions at one time and also works under the same conditions at other times
B．doesn’t allow any change even under different conditions
C．leave no room for improvement.
D．can be used for many purposes
小題4:What is the main idea of the passage？
A．Scientists are different from ordinary people.
B．The Theory of Relativity?.
C．Exactness is the core(核心)of science.
D．Exactness and way of using tools are the keys to making of a scientist.

查看答案和解析>>

同步練習(xí)冊答案