One day a teacher was giving her young students a lesson on how the government works . She was trying to explain the principle of income tax (收入税).
“You see ,” she began , speaking slowly and carefully , “each person who works must pay part of his or her salary (薪水) to the government . If you make a high salary , your taxes are high . If you don’t make much money , your taxes are low .”
“Is that clear ?” she asked . “Does everyone understand the meaning of income tax ?” The students nodded. “Are there any questions ?” she asked . The students shook their heads .
“Very good !” she said . “Now ,I would like you to take a piece of paper and write a short paragraph on the subject of income tax .”
Little Joey was a slow learner . He had lots of problems with spelling and grammar , but this time he at least seemed to understand the task . He took his pen and after a few minutes , he handed the teacher the following composition :
Once I had a dog . His name was Tax .
I opened the door and in come Tax .The teacher was trying to explain one day .
| A．the basic principles of the income tax |
| B．how the government works |
| C．everyone should pay income tax |
| D．how much tax one should pay for his income |
After the teacher’s explanation , .
| A．all the students shook their heads |
| B．many of the students were still puzzled |
| C．not all the students understood the meaning of income tax |
| D．a few students disagreed with their teacher |
The students were asked .
| A．to say something about income tax |
| B．to answer some questions on income tax |
| C．to write a composition on “income tax” |
| D．to explain the principle of income tax |
Little Joey .
| A．was clever |
| B．understood what the teacher said |
| C．was not clever enough |
| D．did as what he was told to do |
Fish have ears. Really. They’re quite small and have no opening to the outside world carrying sound through the body. For the past seven years, Simon Thorrold, a university professor, has been examining fish ears, small round ear bones called otoliths.
As fish grow, so do their otoliths. Each day, their otoliths gain a ring of calcium carbonate (碳酸钙). By looking through a microscope (显微镜) and counting these rings, Thorrold can determine the exact age of a young fish. As a fish gets older, its otoliths no longer get daily rings. Instead, they get yearly rings, which can also be counted, giving information about the fish’s age, just like the growth rings of a tree.
Ring counting is nothing new to fish scientists. But Thorold has turned to a new direction. They’re examining the chemical elements (元素) of each otolith ring.
The daily ring gives us the time, but chemistry tells us about the environment in which the fish swam on any given day. These elements tell us about the chemistry of the water that the fish was in. It also says something about water temperature, which determines how much of these elements will gather within each otolith ring.
Thorrold can tell, for example, if a fish spent time in the open ocean before entering the less salty water of coastal areas. He can basically tell where fish are spending their time at any given stage of history.
In the case of the Atlantic croaker, a popular saltwater food fish, Thorrold and his assistant have successfully followed the traveling of young fish from mid-ocean to the coast, a journey of many hundreds of miles.
This is important to managers in the fish industry, who know nearly nothing about the whereabouts of the young fish for most food fish in the ocean. Eager to learn about his technology, fish scientists are now lending Thorrold their ears.What can we learn about fish ears from the text?
| A．They are small soft rings. |
| B．They are not seen from the outside. |
| C．They are openings only on food fish. |
| D．They are not used to receive sound. |
Why does the writer compare the fish to trees?
| A．Trees gain a growth ring each day. |
| B．Trees also have otoliths. |
| C．Their growth rings are very small. |
| D．They both have growth rings. |
Why is it important to study the chemistry of otolith rings?
| A．The elements of the otoliths can tell the history of the sea. |
| B．Chemical contents of otoliths can tell how fast fish can swim. |
| C．We can know more about fish and their living environment. |
| D．Scientists can know exactly how old a fish is. |
How would you understand “fish scientists are now lending their ears”?
| A．They are very interested in Thorrold’s research findings. |
| B．They want to know where they can find fish. |
| C．They lend their fish for chemical studies. |
| D．They wonder if Thorrold can find growth rings from their ears. |
London-Lazy students can now give up on work altogether as two Oxford University students have made scores of A-grade essays on the website for students to copy.
The essays are on the new website, “revise.it”
The website includes an “EssayLab” designed to make cheating (舞弊) as effective and effortless as possible.
Its homepage announces to surfers (网上冲浪者): “The revise.it EssayLab is a bank of hundreds of A-Level essays covering popular topics.”
“Next time you are asked to write an essay, why not see what we have on the subject-if you are in a lazy state of mind you can even use our guide to writing the essays and then just hand them in.”
Nick Rose and Jordan Mayo, both 19 and first from Manchester, spent much of their first year as students at the university setting up the website. There is no charge for downloading the essays.
“I have never been very good at essay writing,” Rose admitted. “We don’t see essay bank as a cheating way. It’s a surprising valuable resource. You can learn a lot by reading other people’s work on the subject.”
Among other tips, the website suggests inventing important speeches to give essays extra weight: “Popular people to quote (引用) are Douglass Hurd or Disraeli.”
Hurd was a foreign secretary in the 1980s and Disraeli was a 19th century prime minister.
Teachers are expressing their opinions by e-mail that they are angry about the website that “encourages students to cheat”, but students disagree.
According to Rose: “Exams are a fight. It’s us against them.”It can be inferred from this passage that ______.
| A．students who visit the website “revise. it” are all lazy |
| B．students in Oxford University are all lazy |
| C．websites in Oxford University are all set up by students |
| D．websites can provide people with different kinds of information |
Nick Rose and Jordan Mayo set up their website for the purpose of ______.
| A．helping students to cheat in exams |
| B．helping students to improve their writing |
| C．making money to pay for their schooling |
| D．making their teacher free |
What Rose said at last suggests that in England ______.
| A．it is difficult for students to pass their exams |
| B．it is difficult for teachers to finish their teaching |
| C．students are not satisfied with the education system |
| D．students are too lazy to learn anything |
Sharpen your axe (斧头)
A young man approached the foreman (工头)of a logging crew and asked for a job.
“That ” replied the foreman. “Let’s see you fell this tree.”
The young man stepped forward and skillfully a great tree. , the foreman exclaimed, “You can start Monday.”
Monday, Tuesday, Wednesday and on Thursday afternoon the foreman approached the young man and said, “You can pick up your on the way out today.” , the young man replied, “I thought you paid on Friday.”
“ we do,” said the foreman. “But we’re letting you go today because you’ve . Our daily felling charts show that you’ve from first place on Monday to last place today.”
“But I’m a worker,” the young man objected. “I arrive first, leave last, and have worked through my coffee breaks!”
The foreman, the young man’s honesty, thought for a minute and then asked, “Have you ____ your axe?”
The young man replied, “No, sir, I’ve been working too hard to take time for !”
Our lives are like that. We sometimes get so that we don’t take time to sharpen the axe. In today’s world, it seems that everyone is busier than ever, but happy than ever. Why is that? Could it be that we have forgotten how to sharp?
There’s nothing wrong with activity and hard work. But we all need time to , to think and meditate(谋划), to learn and . If we don’t take time to sharpen the axe, we will become and lose our effectiveness.
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How do people traditionally manufacture (制造) things? They usually start with a sheet of metal, wood or other material and cut, drill (钻) and shave it to create a desired shape. Sometimes, they use a mold (模具) made of metal or sand, pour liquid plastic or metal into it and let it cool to create a solid part.
Now, a completely different method is gaining popularity.
On Oct. 9, 2013, London Science Museum kicked off its new exhibition, 3-D: Printing the Future, with over 600 3-D printed objects on display, including space probes (探测器), toy dolls and even human organs – basically any product you can think of, reported Live Science.
You might find it hard to believe that an object can actually be “printed out” like a picture. But it is not that hard to understand how it works. Just as a traditional printer sprays (喷洒) ink onto paper line by line, modern 3-D 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 3-D printer uses are mainly plastic, resin (树脂) and certain metals. The thinner each layer is – from a millimeter to less than the width of a hair – the smoother and finer the object will be. And objects always come out in one piece, sparing you the trouble of putting different parts together afterward.
For example, 10 years ago a desktop 3-D printer might have cost ￡20,000 (200,000 yuan), while now it costs only about ￡1,000, according to the BBC. In fact, 3-D printers have been around for some time, but until recently they hadn’t been very popular since few people could afford them. Last year, though, saw a big decrease in the price of 3-D printers.
However, as 3-D printing technology becomes more commonplace, it may trigger certain problems. One of them is piracy (盗版). “Once you can download a coffee maker, or print out a new set of kitchen utensils (餐具) on your personal 3-D printer, who will visit a retail (零售的) store again?” an expert on 3-D printing told Forbes News.
Even more frightening, the world’s first 3-D printed gun was successfully fired in the US in May of this year, which means that 3-D printing could potentially give more people access to weapons.
According to the article, in the future, 3-D printing technology will probably ______.
| A．change the way people make products |
| B．be applied as widely in our daily lives as computers |
| C．forbid many countries to make purchases of weapons |
| D．take the place of normal printers and save lots of energy |
What was the big event that happened in the 3-D printing industry last year?
| A．Over 600 3-D printed objects were on display in an exhibition. |
| B．3-D printing technology came to be used in various fields. |
| C．The world’s first 3-D printed gun was successfully made. |
| D．The 3-D printer became more affordable for consumers. |
What is the author’s attitude toward 3-D printing technology?
| A．Amused. | B．Objective. |
| C．Supportive. | D．Negative. |
Unlike chemists and physicists, who usually do their experiments using machines, biologists and medical researchers have to use living things like rats. But there are three Nobel prize-winning scientists who actually chose to experiment on themselves – all in the name of science, reported The Telegraph.
● Werner Forssmann (Nobel prize winner in 1956)
Forssmann was a German scientist. He studied how to put a pipe inside the heart to measure the pressure inside and decide whether a patient needs surgery (手术).
Experiments had been done on horses before, so he wanted to try with human patients. But it was not permitted because the experiment was considered too dangerous.
Not giving up, Forssmann decided to experiment on himself. He anaesthetized (麻醉) his own arm and made a cut, putting the pipe 30 centimeters into his vein (血管). He then climbed two floors to the X-ray room before pushing the pipe all the way into his heart.
● Barry Marshall (Nobel prize winner in 2005)
Most doctors in the mid-20th century believed that gastritis was down to stress, spicy food or an unusually large amount of stomach acid (胃酸). But in 1979 an Australian scientist named Robin Warren found that the disease might be related to a bacteria (细菌) called Helicobacter pylori. So he teamed up with his colleague, Barry Marshall, to continue the study. When their request to experiment on patients was denied, Marshall bravely drank some of the bacteria. Five days later, he lost his appetite and soon was vomiting (呕吐) each morning – he indeed had gastritis.
● Ralph Steinman (Nobel prize winner in 2011)
This Canadian scientist discovered a new type of immune system cell (免疫细胞) called the dendritic cell. He believed that it had the ability to fight against cancer.
Steinman knew he couldn’t yet use his method to treat patients. So in 2007, when doctors told him that he had cancer and that it was unlikely for him to live longer than a year, he saw an opportunity.
With the help of his colleagues, he gave himself three different vaccines (疫苗) based on his research and a total of eight experimental therapies (疗法). Even though Steinman eventually died from his cancer, he lived four and a half years, much longer than doctors had said he would.The main purpose of the article is to ______.
| A．list some famous Nobel prize winners. |
| B．introduce a few Nobel prize winners who did experiments on themselves. |
| C．describe some dangerous experiments that Nobel prize-winners did on themselves. |
| D．list some difficulties that scientists go through to make important discoveries in biology . |
Which of the following is TRUE according to the article?
| A．Forssmann’s experiment ended in failure. |
| B．Forssmann had the pipe pushed all the way into his heart. |
| C．Barry Marshall succeeded by drinking some Helicobacter pylori. |
| D．Barry Marshall was given full responsibility for the study on gastritis at first. |
The underlined word “gastritis” in Paragraph 5 probably means ______.
| A．a kind of stomach disease |
| B．a kind of immune cell |
| C．a new type of therapy |
| D．a type of leg cancer |
From the text, we can conclude that Ralph Steinman ______.
| A．had his request to experiment on patients denied |
| B．believed that cancer comes from stress and spicy food |
| C．discovered a new type of cancer cell called the dendritic cell |
| D．tried different therapies containing the dendritic cell on himself |
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