1 . The history of microbiology begins with Dutch cloth maker named Antoni van Leeuwenhoek, a man of no formal scientific education. In the late 1600s. Leeuwenhoek, inspired by the magnifying lenses（放大镜）he used to examine cloth, built some of the first-microscopes. He developed technique to improve the quality of tiny, rounded lenses, some of which could magnify an object up to 270 times. After removing some plaque from between his teeth and examining it under a lens, Leeuwenhoek found tiny twisting creatures, which he called “animalcules”.
His observations, which he reported to the Royal Society of London, are among the first descriptions of microbes（微生物）. Leeuwenhoek discovered an entire universe invisible to the human eye. He found different microbes in samples of pond water, rain water, and human blood. He gave the first description of red blood cells, observed plant tissue, examined muscle, and investigated the life cycle of insects.
Nearly two hundred years later, Leeuwenhock’s discovery of microbes helped French chemist and biologist Louis Pasteur to develop his “theory of disease”. This concept suggested that disease originates from tiny organisms attacking and weakening the body. Pasteur’s theory later helped doctors to fight infectious diseases including anthrax, diphtheria, polio, smallpox, tetanus, and typhoid. All these breakthroughs were the result of Leeuwenhoek’s original work. Leeuwenhoek did not foresee this legacy.
In a 1716 letter, he described his contribution to science this way: “My work, which I’ve done for a long time, was not pursued in order to gain the praise I now enjoy, but chiefly from a strong desire for knowledge, which I notice resides in me more than in most other men. And therefore; whenever I found out anything remarkable, I have thought it my duty to put down my discovery on paper, so that the scientific community might be informed thereof.”
1. Which of the following best describes Leeuwenhoek?| A．trained researcher with an interest in microbiology |
| B．A curious amateur who made pioneer studies of microbes |
| C．A talented scientist interested in finding a cure for disease |
| D．A bored cloth maker who accidentally made a major discovery |
| A．the discovery of microbes |
| B．Pasteur’s theory of disease |
| C．Leeuwenhoek’s contribution |
| D．the origin of the tiny organism |
| A．He admitted that many of his discoveries happened by chance. |
| B．He considered his work to be central to later medical breakthroughs. |
| C．He was greatly concerned with improving people’s living conditions. |
| D．He believed the sharing of knowledge was a key to scientific progress |
a. Magnifying lenses were built.
b. The “theory of disease” was put forward
c. Microbes were discovered in samples of waters.
d. Leeuwenhoek’s first microscopes were successfully developed.
e. Leeuwenhoek explained his thoughts upon his own contribution.
| A．a-d-c-e-b | B．d-a-c-e-b | C．a-c-d-b-e | D．d-a-e-b-c |
Recently, two researchers, Jose Millan and Michele Tavella from the Federal Polytechnic School in Lausanne, Switzerland, demonstrated (展示) a small robotic wheelchair directed by a person's thoughts.
In the laboratory, Tavella operated the wheelchair just by thinking about moving his left or right hand. He could even talk as he watched the vehicle and guided it with his thoughts.
“Our brain has billions of nerve cells. These send signals through the spinal cord (脊髓) to the muscles to give us the ability to move. But spinal cord injuries or other conditions can prevent these weak electrical signals from reaching the muscles.” Tavella says. “Our system allows disabled people to communicate with external world and also to control devices.”
The researchers designed a special cap for the user. This head cover picks up the signals from the scalp (头皮) and sends them to a computer. The computer interprets the signals and commands the motorized wheelchair. The wheelchair also has two cameras that identify objects in its path. They help the computer react to commands from the brain.
Prof. Millan, the team leader, says scientists keep improving the computer software that interprets brain signals and turns them into simple commands. “The practical possibilities that BCI technology offers to disabled people can be grouped in two categories: communication, and controlling devices. One example is this wheelchair.”
He says his team has set two goals. One is testing with real patients, so as to prove that this is a technology they can benefit from. And the other is to guarantee that they can use the technology over long periods of time.
1. BCI is a technology that can ________.
| A．help to update computer systems |
| B．link the human brain with computers |
| C．help the disabled to recover |
| D．control a person's thoughts |
| A．By controlling his muscles. |
| B．By talking to the machine. |
| C．By moving his hand. |
| D．By using his mind. |
| A．scalp→computer→cap→wheelchair |
| B．computer→cap→scalp→wheelchair |
| C．scalp→cap→computer→wheelchair |
| D．cap→computer→scalp→wheelchair |
| A．make profits from them |
| B．prove the technology useful to them |
| C．make them live longer |
| D．learn about their physical condition |
| A．Switzerland, the BCI Research Center |
| B．New Findings About How the Human Brain Works |
| C．BCI Could Mean More Freedom for the Disabled |
| D．Robotic Vehicles Could Help to Cure Brain Injuries |
3 . Brownie and Spotty were neighbor dogs who met every day to play together. Like pairs of dogs you can find in most any neighborhood, these two loved each other and played together so often that they had worn a path through the grass of the field between their respective houses.
One evening, Brownie's family noticed that Brownie hadn't returned home. They went looking for him with no success. Brownie didn't show up the next day, and despite their efforts to find him, by the next week he was still missing. Curiously, Spotty showed up at Brownie's house alone. Barking, whining and generally pestering Brownie's human family. Busy with their own lives, they just ignored the nervous neighbor dog.
Finally, one morning Spotty refused to take "no" for an answer. Ted, Brownie's owner, was steadily harassed by the furious, adamant little dog. Spotty followed Ted about; barking insistently, then darting toward nearby empty lot and back, as if to say, "Follow me! It's urgent!"
Finally, Ted followed the frantic Spotty across the empty lot as Spotty paused to race back and bark encouragingly. The little dog led the man under a tree, past clumps of trees, to a desolate spot a half mile from the house. There Ted found his beloved Brownie alive, one of his hind legs crushed in a steel leg hold trap. Horrified, Ted now wished he'd taken Spotty's earlier appeals seriously. Then Ted noticed something quite remarkable.
Spotty had done more than simply led Brownie's human owner to his trapped friend. In a circle around the injured dog, Ted found an array of dog food and table scraps which were later identified as the remains of every meal Spotty had been fed that week!
Spotty had been visiting Brownie regularly, in a single minded quest to keep his friend alive by sacrificing his own comfort. Spotty had evidently stayed with Brownie to protect him from predators, snuggling with him at night to keep him warm and nuzzling him to keep his spirits up.
Browni’s leg was treated by a veterinarian and he recovered. For many years thereafter, the two families watched the faithful friends playing and chasing each other down that well-worn path between their houses.
1. What's the correct order of the following?① They couldn’t find him everywhere.
② Spotty went to Brownie’s master's house to ask for help.
③ One evening, Brownie was missing.
④ Spotty found Brownie and helped him by giving him food.
⑤ They play together happily again.
| A．③①②④⑤ | B．⑤③①④② | C．③①④②⑤ | D．③①④⑤② |
| A．Spotty took Brownie's food to him every day. | B．There was a natural path between the two houses. |
| C．The legs of Brownie were hurt by the steel trap. | D．Brownie disappeared for more than a week. |
| A．Ted noticed Spotty’s earlier actions. | B．Brownie’s family were thankful to Spotty. |
| C．They asked the police to find Brownie for them. | D．Spotty led Brownie’s owner to feed him. |
4 . Early February, I was flying up to Ohio. Well prepared, I had everything in my favour—fuel for five hours, charts in order, my flight plan on my lap, and a beautiful clear sky.
I was wrong.
I had heard about Alberta Clippers coming out of Canada. I knew all about them―how an entire air mass was streaming along at over sixty miles an hour.
That morning, the Weather Briefer informed me that an Alberta Clipper was going over Chicago about the time I got to the airport. Chicago was some 400 miles from my destination—not a factor, or so I thought. That was the first hint I missed.
The controller called and asked if I wanted to adjust my flight plan. I did the check and everything was in the green. So I told him no. Twenty minutes later the controller called again asking whether I wanted to adjust my flight plan. I checked everything. All was fine. I ignored that hint. I was fooled by the smooth air and limited experience with a rapidly moving air mass that was not changing violently. The Alberta Clipper was clipping along.
The first blast of turbulence（气流）struck my plane. I got slammed into the roof, and then slammed sideways hitting the window with such force up my nose that I started bleeding.
After a 2-hour flight of 100 miles, I realized fuel was now an issue. So was landing. I called Flight Following. We figured out the airport I could land.
The engine stopped. So did my heart. There is no quiet as quietly stunning as this one at such an altitude. I had run out of fuel in the left tank, and only a little in my right tank. The engine quit for a second time. I declared an emergency. I was told that I might get another few minutes of fuel if I gently banked the airplane. Luckily, it worked. Then, the engine quit for the last time. I was a glider now. I made a long lazy spiral descent. Down I went. I stopped at the very end of the runway.
I made so many mistakes, missed so many clues, and showed my ignorance so much that I beat myself up over and over again in my mind. I learned textbook descriptions of Alberta Clippers and real-life experience with one are totally different. I will never forget the sound of that silence.
I flew home the next day. Older. Wiser. Humbler. Lucky.
1. We can know from the passage that Alberta Clippers ______.| A．can bring snowstorms |
| B．are quick-moving air masses |
| C．are violently changing air pressure |
| D．can lead to a sudden temperature drop |
| A．His lack of flying experience. |
| B．His poor preparation for the journey. |
| C．His misjudgement about the air mass. |
| D．His overconfidence in his piloting skills. |
a. I declared an emergency.
b. My airplane was running out of fuel.
c. I insisted on carrying on my flight plan.
d. I was thrown to the roof by the violent air mass.
e. I slightly banked my airplane and made a landing.
| A．dcbea | B．dceba |
| C．cdabe | D．cdbae |
| A．a rewarding training | B．a narrow escape |
| C．a painful exploration | D．a serious accident |
5 . The word "orange" describes both a color and a fruit. Which one came first might be surprising. "Orange" when used as the name of the fruit came before "orange" as a word to describe color. While the shade itself existed before the fruit, there was not a name in the English language for the color. Before the introduction of the fruit to English-speaking countries, the color was usually described as a shade of red or yellow.
In the early 16th century, Portuguese traders brought oranges from India to Europe. The Europeans had not seen the bright colored fruit before and didn't have a name for it. The fruits were named "narancia" by Italians and "narange" by the French and were sometimes referred to as "golden apples" by English speakers.
"Orange" was first used in a phrase to describe shades of colors, including in a third-century Greek text translated into English, in 1576. It describes Alexander the Great's servants as dressed in "orange colour velvet （天鹅绒）In 1578, a Latin-American dictionary defined "melites" as "a precious stone of orange color”. While orange represents the color of the objects, it needed the word "color" to follow it in order for the meaning to be clear. In the mid-1590s, Shakespeare described a beard as "orange tawny", one of the first instances of "orange" without the word "color" as part of the expression. Tawny is a brown color often used on its own. Orange was not yet a color, just a shade of brown.
In 1616, in an account describing varieties of tulips （郁金香）that can be grown, orange was used as a stand-alone color. When Isaac Newton performed his experiments on the color spectrum （色谱），he listed it as one of the seven basic colors. After almost half a century, orange was recognized as a color on its own.
1. Which is the right time order of the appearance of "orange"?| A．As a fruit→as a color→the shade itself. |
| B．The shade itself→as a color→as a fruit. |
| C．The shade itself→as a fruit→as a color. |
| D．As a color→the shade itself→as a fruit. |
| A．Melites. | B．Narange. |
| C．NaranciA. | D．Golden apples. |
| A．My ball is a melite. | B．The ball is orange colour. |
| C．The orange ball is beautiful. | D．I have an orange ball. |
| A．How to plant oranges | B．The spread of oranges |
| C．Orange used as a color | D．Shakespeare and oranges |
6 . One day in March,seven years ago,during happy hour at a bar in my hometown of Fayetteville,Arkansas,made a surprise announcement to my friends:I was going to shut down my law practice and attempt to travel around the globe in a year.What’s more,I would do it without taking any flights or making a single advance reservation of any kind.My announcement drew mixed reactions from my friends.Some offered support and encouragement,while others were more doubtful.
Once I had said the words,there was no turning back.It took months to shut down my practice and get things in order.Once I set off on my adventure in December 2008,found travelling without using planes was not easy.Trying to circle the globe in 16 months(it took me a bit longer than the initial 12 months planned)made it even harder.Even so,travelling overland was the most amazing way to truly understand the immensity(浩瀚无际)of our wonderful planet.
I took three consecutive(连续)overnight buses to travel 3,000 km through Argentina,from Ushuaia to the capital Buenos Aires.I would look out the windows for hours on end of the completely unspoiled plains,as if humans had never touched it.
It took seven consecutive days and nights on trains to get from Moscow to Beijing,each day spent staring out the windows for hours as the Siberian plains swept by.Sometimes,I wouldn’t see a village or a human being for 10 hours.Later in my journey,it took 22 days on a cargo freighter(货船)to get from New Zealand through the Panama Canal and back to Philadelphia,to finish my round-the-world adventure.
It turned out that travelling with no reservations was far less difficult than had imagined.Pulling into a city on a bus with a backpack,looking in a guidebook for a few suggestions of accommodations(住宿),and then finding an empty room was never much of a problem anywhere.It also kept me flexible and open about all my travel plans,which is advice I give everyone who asks—plan far less than you think you should.
1. The author's trip was special in that .| A．he made it at the expense of giving up his job |
| B．it hardly cost him anything |
| C．he did not make advance booking or travel by air |
| D．it was a global trip |
| A．June 2009 | B．December 2009 | C．February 2010 | D．April 2010 |
| A．Unimportant. | B．Undamaged. | C．Invaluable. | D．Priceless. |
(1)Moscow (2)Philadelphia (3)New Zealand
(4)Ushuaia (5)Beijing (6)Buenos Aires
| A．(5)(4)(1)(6)(3)(2) | B．(4)(6)(1)(5)(3)(2) |
| C．(4)(5)(1)(6)(3)(2) | D．(5)(1)(6)(4)(3)(2) |
| A．Challenging but pleasant. | B．Dangerous but wonderful. |
| C．Boring and disappointing. | D．Costly and painful. |
7 . There has been a lot of publicity (宣传) recently surrounding 5G, the next generation of wireless technology for the world. But what is this technology and how might it change our lives?
What is 5G?
5G stands for fifth generation, meaning the next step in the progression of technology to replace the current 4G system. 4G was the replacement for 3G, which came after 2G, and so on. These systems are wireless computer networks. Earlier “G” systems were designed to improve mobile communication operations. Each new technology brought major improvements in speed and greatly increased network capacity. The new 5G system promises more of the same. It is expected to permit more users to do more things-at a faster rate. Higher internet speeds and larger network capacity should result in better performance for device users connected to 5G. However, technology experts say there is a major way that 5G is different than the earlier systems. It will move well beyond mobile network technology to affect many more devices and industries than other “G” versions.
When will it be available?
Before we can all use 5G, wireless companies and phone makers will have to complete and deploy (部署) a whole new system. New phones and communication equipment must be built. American wireless companies have been preparing for the new system for some time. They have been creating new network equipment and buying broadcasting space to carry 5G signals. They have built news G antennas(天线)to serve American cities and towns. Wireless providers will invest at least $275 billion n 5G-related networks in the United States, the industry group CTIA reported. The first U.S, launch of 5G is expected to happen sometime this year. Industry experts expect it will take a few more year to go nationwide. It will take even longer to reach rural areas. China is expected to launch 5G sometime in 2020, while European nations are likely to build their systems more slowly over time.
1. Which system is widely used nowadays?| A．5G. | B．2G. | C．3G | D．4G. |
| A．It will allow more users to do more things. | B．The internet speed will be much higher. |
| C．The users will spend much less money on it. | D．It will affect more devices and industries |
| A．5G system has nothing to do with phone makers. |
| B．There is much work to do before 5G comes into use. |
| C．New phones will be much smarter than those used now. |
| D．4G system will be stopped as soon as 5G comes into use. |
| A．USA→China→European nations. | B．China→USA→European nations. |
| C．USA→European nations→China. | D．European nations→China→USA. |
8 . In work, as well as in life, doing what needs to be done in order to reach our goals can be difficult. Without a good system in place, it is easy to lose focus, waste time and lose track of our most important tasks. Luckily, one of the most efficient(高效的)useful ways is also one of the world's easiest---the Pomodoro Technique.
The Pomodoro Technique was developed by Francesco Cirillo in the late 1980s, which breaks down your work into 25-minute blocks(一段时间)divided by short breaks. Cirillo named the system after the tomato-shaped kitchen timer(计时器)that he used to track his work time when he was studying in university, where he developed a habit of doing short blocks of work followed by resting periods. He realized this method could help him work with time instead of struggling against it. In 2006, Cirillo published his Pomodoro Technique manual for people to download free of charge. It was downloaded over two million times.
The Pomodoro Technique was built around a handful of important steps. First, choose a task that you'd like to get done. It can be something big, something small, or something that you've been putting off for months. What matters is that you are ready to give it your full attention.
Next, set a timer for 25 minutes. Try to spend the full 25 minutes with your complete attention on the task. Then, when the timer goes off, take a five-minute break. Sit back, have a drink, go for a short walk, or do something else that doesn't relate to work. Treat yourself to a longer break that lasts 15 to 30 minutes after you have completed four of these 30-minute cycles. In theory, the longer break will allow your brain to relax, reset, ready for the next round of Pomodoros.
After trying the Pomodoro Technique, you may want to experiment a little. Some people have found that 90-minute blocks work best, while others might perform better with more flexible periods. It varies from person to person. Just remember, like many things in life, simpler is often better!
1. What can we know about Pomodoro Technique?| A．The technique was named after Cirillo. |
| B．Cirillo developed a habit of doing short blocks of work followed by resting periods in 2006. |
| C．Users of the technique can have a rest at intervals. |
| D．Cirillo got profits from Pomodoro Technique manual. |
a. Focus on the task.
b. Set out tasks.
c. Take a 5-minute break.
d. Take a longer break.
e. Repeat the cycle four times
| A．acebd | B．baced |
| C．bacde | D．acede |
| A．A 90-minute block works best. |
| B．Take a longer break that lasts 60 minutes will allow your brain to relax, reset, ready for the next round of Pomodoros. |
| C．The time setting depends on the users. |
| D．A simple Pomodoro can make things in life better. |
| A．The introduction of the Pomodoro Technique. |
| B．The invention of the Pomodoro Technique. |
| C．The use of the Pomodoro Technique. |
| D．The effect the Pomodoro Technique brings to people. |
9 . The story of chocolate begins with the discovery of America in 1492. Columbus was the first European to come into contact with cacao. Columbus was struck by how much value the Indians placed on them as he did not know the beans were used by currency. It is unlikely that Columbus brought any of these beans back to Spain and it was not until about 25 years later that Cortez grasped the commercial possibilities when he found the Aztecs using the beans to make the royal drink “chocolate”.
The Spanish, in general, were not fond of the bitter drink so Cortez and his followers made it more palatable by adding cane sugar and later cinnamon and vanilla were added. Spanish monks let the secret out back home and, although the Spanish hid it from their neighbors for a hundred years, finally chocolate’s popularity grew until it was their fashionable drink at the French court and the wise choice of customers at London meeting houses.
The cacao tree is strictly a tropical plant only in hot, rainy climates. Thus, its cultivation is limited to countries not more than 20 degrees north or south of the equator (赤道). The cacao tree is very delicate and sensitive. It needs protection from the wind and requires a fair amount of shade under most conditions. This is true especially in its first two or three years of growth. A newly planted young cacao tree is often sheltered by a different type of trees. It is normal to plant food crops for shade such as bananas, plantain, coconuts or cocoyams. Rubber trees and forest trees are also used for shade. Once established, however, cacao trees can grow in full sunlight, provided there are fertile soil conditions and intensive farming. With cutting and careful cultivation, the trees of strains will begin bearing fruit in the fifth year. With extreme care, some strains can be stimulated to produce good crops in the third and fourth year.
The process of turning cacao into chocolate hasn’t changed much since the Swiss made the major breakthroughs in the process in the late 1800s. First the beans go through a process of fermentation ( 发酵 ) and drying. They are then sorted by hand before cleaning and then roasting. Winnowing ( 风 扬 ) follows which removes the hard outer layers and leaves what is as the “grains”. A crushing and heating process known as Hunte’s Process is then used to remove nearly half of the cocoa butter from the nibs. This makes unsweetened chocolate. Basic eating chocolate is made from a mixture of the unsweetened chocolate with some of the cocoa butter along with other ingredients such as sugar and vanilla. The resulting product is then “purified” and this purifying gives chocolate the silky texture that we know so well. The finished result is then shaped, cooled, packaged by machine, distributed, sold and of course, eaten!
1. Why didn’t Columbus bring beans back to Spain at once when he found cacao?| A．Because he couldn’t afford to buy the cacao bean. |
| B．Because he didn’t know how to turn cacao bean into chocolate. |
| C．Because he was not aware of the monetary value of cacao bean then. |
| D．Because Spaniards then didn’t favour the chocolate that the Aztecs originally drank. |
| A．affordable | B．agreeable | C．patent | D．portable |
| A．Cacao trees need a lot of looking after to be used commercially. |
| B．Cacao trees require hot, rainy climates and adequate sunlight. |
| C．Cacao trees won’t produce fruit until the fifth year. |
| D．Cacao trees can grow well in all continents. |
① The chocolate is reheated to melt it, put into patterns and then cooled to make its final shapes.
② The beans are harvested on the farm.
③ Some cocoa butter is then obtained using Hunte’s Process to make cooking chocolate.
④ The cooking chocolate is then mixed with other ingredients to make the various types of eating chocolate available today.
⑤ The beans are winnowed after fermentation and drying and these two processes produce the grains.
⑥ The finished product is wrapped, sent to shops and then sold.
| A．②①③④⑤⑥ | B．②③①⑤④⑥ | C．②④⑤①③⑥ | D．②⑤③④①⑥ |
10 . A man in Brisbane, Australia, survived a house fire early Wednesday morning because his pet parrot, named Eric, sounded the alarm.
Anton was asleep when his home caught fire just after 2:00 a.m., according to the Australian Broadcasting Corporation (ABC). Anton didn’t hear the smoke detector(探测器). Instead, he heard Eric calling his name repeatedly, ABC reported. “I heard a bang and Eric — my parrot— he started to yell so I woke up and I smelled a bit of smoke,” Anton told ABC. “I grabbed Eric, opened the door and looked to the back of the house and saw some flames,” he added. “And so I grabbed my bag and bolted downstairs.” Officials told ABC that Anton’s home did have a smoke detector, but it didn’t go off before Eric started calling “Anton! Anton!” Queensland Fire and Emergency Services Acting Inspector Cam Thomas told ABC that the firemen were able to contain the fire before it spread to other properties(财产).
According to ABC, there may be a crime(犯罪)and policemen are looking into what caused the fire. In the meantime, Anton is glad that he and Eric survived. “I’m in shock but I’m fine,” he told ABC. “Everything’s all right so long as I have myself and the bird.”
1. What is the right order of the following?a. Anton saw some flames.
b. Anton heard Eric calling his name.
c. Anton bolted downstairs.
d. Anton’s house caught fire at midnight.
e. Anton woke up and smelled the smoke.
| A．dbeac. | B．debac. | C．daebc. | D．deabc |
| A．Awkward | B．Lucky. | C．Shocked | D．Annoyed |
| A．Eric got badly injured in the fire. |
| B．The house was burnt to the ground. |
| C．Someone might have set fire to the house. |
| D．The police couldn’t find the cause of the fire. |
