When Kate's paintings were on show in London，a poet described her paintings as “a ribbon (丝带）around a bomb”．Such comments seem to suggest Kate had a big influence on the art world of her time．Sadly，she is actually a much bigger name today than she was during her time．
Born in 1907 in a village near Mexico City，Kate suffered from polio（小儿麻痹症）at the age of seven．Her spine (脊柱)became bent as she grew older．Then，in 1925，her back was broken in several places in a school-bus accident．Throughout the rest of her life，the artist had many operations，but nothing was able to cure the terrible pain in her back．However，the accident had an unexpected side effect．While lying in her bed recovering，Kate taught herself to paint．
In 1929，she got married to Diego Rivera，another famous Mexican artist．Rivera's strong influences on Kate's style can be seen in her early works，but her later works from the 1940s，known today as her best works，show less influence from her husband．
Unfortunately，her works did not attract much attention in the 1930s and1940s，even in her home country．Her first one-woman show in Mexico was not held until 1953．For more than a decade after her death in 1954，Kate's works remained largely unnoticed by the world，but in the 1970s her works began to gain international fame at last．What does the underlined phrase “a much bigger name” in paragraph 1 most probablymean?
| A．A far better artist． |
| B．A far more gifted artist． |
| C．A much stronger person． |
| D．A much more famous person． |
The terrible pain Kate suffered was caused by．
| A．polio |
| B．her bent spine |
| C．back injuries |
| D．the operations she had |
Kate's style had become increasingly independent since the．
| A．1930s |
| B．1940s |
| C．1950s |
| D．1970s |
What is author's attitude toward Kate?
| A．Devotion． |
| B．Sympathy． |
| C．Worry． |
| D．Encouragement． |
Dolphins(海豚) live in a dark underwater world. It’s often impossible to see each other or anything else around them, so sound plays an important role in their survival. To communicate with each other, dolphins produce all kinds of sounds.
Only other dolphins understand what the sounds mean. Scientists haven’t uncovered their secret communication, except for one kind of whistle. It might last less than a second, but this whistle is a big deal. Why? Because these whistles are actually names of dolphins - and every dolphin has one. Scientists call these sounds a “signature whistle.” When other dolphins hear the whistle, they know which dolphin is calling.
Dolphins often hunt by themselves but still need to stay connected to the group. Since they can’t always see each other, dolphins use their signature whistles to check in with other dolphins hundreds of yards away. “In coastal areas, dolphins exchange whistles even when they’re a third of a mile apart,” says Greg Campbell, who studies animals. That means dolphins shout out to group members that might be nearly five football fields away.
What’s amazing is who names the baby dolphin. Not the mother. Not an auntie dolphin or another group member. Scientists believe the baby dolphin itself comes up with the signature whistle. Like human babies, a baby dolphin plays with sounds throughout its first year. While testing its sound skills, a baby dolphin is doing something amazing. It’s creating or figuring out its signature whistle. How or why it chooses its signature whistle is not clear. Studies show that most of the time the signature whistle is nothing like its mother’s or group members’ whistles.
When the baby dolphin is about a year old, its signature whistle is set. It repeats it often so the other dolphins learn to recognize it.
Deciphering(破译) dolphin names is just the beginning of figuring out what dolphins communicate about. Do they chat about sharks? Discuss the tides? Maybe they even have a name for people. Someday scientists are to decipher the rest of dolphins’ communication.Sound is important for dolphins because of ______.
| A．their poor sense of direction |
| B．their living environment |
| C．their strong enemies |
| D．their big groups |
The dolphin’s signature whistle ______.
| A．lasts along time |
| B．can travel long distances |
| C．is especially helpful in hunting |
| D．can be recognized by other animals |
The author writes the text mainly to _____.
| A．encourage readers to study dolphins |
| B．tell readers how dolphins communicate |
| C．show how lovely and clever dolphins are |
| D．introduce a special sound made by dolphins |
A baby dolphin gets its name ______.
| A．soon after it was born | B．according to its size |
| C．all by itself | D．with the help of its group |
Christian Eijkman, a Dutch doctor, left the Netherlands for the island of Java. Many people on the island had a disease called beri-beri. He was going there to try and find a cure.
At first, Eijkman thought some kind of germ (细菌) caused beri-beri. He raised some chickens. He didn’t eat them, but made experiments on them. The local people were quite surprised at that. One day he noticed that his chickens became sick when they were fed the food most Javanese ate — refined white rice (精炼米). When he fed them with unrefined rice, also known as brown rice, they recovered. Eijkman realized that he had made an important discovery — that some things in food could prevent disease. These things were named vitamins. The Javanese were not getting enough vitamins because they had actually removed the part that contains vitamins. Later, other diseases were also found to be caused by the lack of vitamins in a person’s food.
Today many people know the importance of vitamins and they make sure they have enough vitamins from the food they eat. If they don’t, they can also take vitamin pills.Christian Eijkman went to the island of Java to ______.
A. help the Javanese with their illness
. find ways to grow better crops
C. do some research about the island
D. spend his holidayWhy did Christian Eijkman raise some chickens?
| A．To eat them. |
| B．To make money by selling them. |
| C．To give the Javanese a surprise. |
| D．To carry out his experiments. |
If a person doesn’t get enough vitamins in his diet, he’d better ______.
| A．eat more rice | B．eat vitamin pills |
| C．eat some chicken | D．eat more meat |
Decision-thinking is not unlike poker—it often matters not only what you think, but also what others think you think and what you think they think you think. The mental process is similar. Naturally, this card game has often been of considerable interest to people who are, by any standards, good thinkers.
The great mathematician John von Neumann was one of the founders of game theory. In particular , he showed that all games fall into two classes : there are what he called games of “ perfect information ” , games like chess where the players can’t hide anything or play tricks : they don’t win by chance , but by means of logic and skills . Then there are games of “imperfect information”, like poker, in which it is impossible to know in advance that one course of action is better than another.
One mistaken idea about business is that it can be treated as a game of “perfect information”. Quite the reverse, business, polities, life itself are games which we must normally play with very imperfect information. Business decisions are often made with many unknown and unknowable factors, which would even puzzle the best poker players. But few business people find it comfortable to admit that they are taking a chance, and many still prefer to believe that they are playing chess, not poker.The subject discussed in this text is __________.
| A．the process of reaching decisions |
| B．the difference between poker and chess. |
| C．the secret of making good business plans |
| D．the value of information in winning games |
An important factor in a game of imperfect information is __________.
| A．rules | B．luck | C．time | D．ideas |
Which of the following can be used in place of “Quite the reverse ” in Paragraph 3 ?
| A．Quite right. | B．True enough. |
| C．Most unlikely. | D．Just the opposite. |
In the writer’s opinion, when making business decisions one should _________.
| A．put perfect information before imperfect information |
| B．accept the existence of unknown factors |
| C．regard business as a game of chess |
| D．mix known and unknown factors |
See a cellphone cover that you like on Taobao? Forget about placing an order, paying the bill online and waiting for days for it to be delivered to you. In the near future, you'll be able to get it in minutes just by hitting “print” on your computer.
You might find it hard to believe that you could actually “print” an object like you would a picture. But it is not that hard to understand how it would work. Just as a traditional printer sprays ink onto paper line by line, modern 3D printers spread material onto a surface layer by layer, from the bottom to the top, gradually building up a shape.
Instead of ink, the materials the 3D printer uses are mainly plastic, resin(树脂) and certain metals. The thinner each layer is—from a millimetre to less than the width of a hair—the smoother and finer the object will be.
This may sound like a completely new technology, but the truth is that 3D printing has been around since the late 1980s. Back then, it was barely affordable for most people, so few knew about it.
Last year, though, saw a big change in the 3D printing industry—printers became much cheaper. For example, 10 years ago a desktop 3D printer might have cost ￡20，000, while now they cost only about ￡1，000, according to the BBC.
Taken out of the factory and introduced to more diverse and common uses, 3D printing can create just about anything you can think of—flutes , bikinis, jewelry, aircraft parts and even human organs. In fact, scientists from Cornell University in New York have just made an artificial ear using a 3D printer, according to Science Daily. The fake ear looks and acts exactly like a natural one.
However, as 3D printing becomes more common, it may bring about certain problems—such as piracy. “Once you can download a coffee maker, or print out a new set of kitchen utensils (餐具) on your personal 3D printer, who will visit a retail store again？” an expert in 3D printing told Forbes News. Even more frightening, what if anyone in the world could use a 3D printer to print out a fully functioning gun?According to the article, in the future, the 3D printing technology will _______.
| A．enable people to make better purchases online |
| B．change the way we make many products |
| C．be applied as widely in our daily life as computers |
| D．shorten the time it takes for people to get what they buy online |
What happened in the 3D printing industry last year?
| A．The 3D printing technology was taken out of the factory. |
| B．The 3D printing technology began to be used in various fields. |
| C．The 3D printer was used for medical treatment for the first time. |
| D．The 3D printer became more affordable for consumers. |
What is the best title of the passage?
| A．Great Demand for 3D Printers | B．Technology in the Future |
| C．Online Shopping Disappearing | D．Printing out Everything |
How is the last paragraph developed?
| A．By giving examples. |
| B．By making comparisons. |
| C．By analyzing the cause and effect. |
| D．By presenting research findings. |
The bed should be reserved as a place for sleep, but people tend to read an iPad a lot in bed before they go to sleep.
Charles Czeisler, a professor at Harvard Medical School, and his colleagues got a small group of people for an experiment. For five days in a row, the people read either a paper book or an iPad for four hours before sleep. Their sleep patterns were monitored all night. Before and after each trial period, the people took hourly blood tests to paint a day-long picture of just how much melatonin (褪黑激素) was in their blood at any given time.
When subjects read on the iPad as compared to the paper books, they reported feeling less sleepy at night and less active the following morning. People also took longer to fall asleep on the iPad nights, and the blood tests showed that their melatonin secretion (分泌) was delayed by an hour and a half.
The researchers conclude in today's journal article that given the rise of e-readers and the increasingly widespread use of e-things among children and adolescents, more research into the long-term consequences of these devices on health and safety is urgently needed. Czeisler and colleagues go on, in the research paper, to note：“Reading an iPad in bed may increase cancer risk.”
However, software has been developed that can reduce some of the blue light from the screens of phones and computers according to time of day, and there are also glasses that are made to filter (过滤) short wavelengths. While they seem like a logical solution for the nighttime tech users, it needs more research.In Charles Czeislers experiment, all the subjects were asked to______.
| A．sit in a row and receive the strict tests |
| B．have their sleep patterns observed all night |
| C．read a paper book and an iPad at the same time |
| D．have their blood tested per hour during the trial |
The third paragraph tells us the iPad readers were likely to____________.
| A．feel less sleepy and tired in the day |
| B．fall asleep more easily after reading |
| C．become less energetic the next morning |
| D．have a lot more melatonin secretion |
The special software recently developed can______.
| A．remove the blue light from your devices completely |
| B．help prevent eyes being harmed by short wavelength |
| C．weaken the harm done by doing nighttime e-reading |
| D．be used in all the e-things widely and safely |
Which of the following can be the best title for the text?
| A．No e-reading in bed before sleep |
| B．New software for night e-readers |
| C．Wrong behaviors before bedtime |
| D．No games on iPad in bed |