D
Mars was the first planet that humans attempted to get to. Since the 1960’s, scientists have been working to learn more information about the Mars’ past, We now know that Mars was once a warm, wet place with great oceans and deep rivers. We also know that about 3.7 billion years ago, all that water disappeared when the planet lost its air. But why did the atmosphere on Mars change so greatly?
NASA had launched the MAVEN spacecraft in the hope of answering that very question. MAVEN will study the remains of Mars’ air and help scientists figure out what became of the rest of it．
The spacecraft was launched on Monday, November 18, 2013, from Cape Canaveral, Florida. The trip to Mars takes about 10 months. and MAVEN is scheduled to go into orbit in September 2014. It is the first spacecraft created with the purpose of studying Mars’ atmosphere. Its wings measures 37.5 feet not quite the length of a school bus, and it weighs 1991 pounds about the same amount as a small car. MAVEN is equipped with eight different tools to measure and study the planet’s atmosphere. To collect information, it will fly in orbit as fast as 3278 miles per hour, and as slow as 93 miles per hour.
Once it arrived at Mars, MAVEN will have plenty of company. The spacecraft Curiosity is still walking around the planet’s rocky surface, studying the geology, chemistry and possible biology there. NASA currently has a number of spacecrafts getting unique views of Mars with powerful cameras and telescopes. These missions are all slow, steady steps forward to discover Mars secret past. While the results may not be revealed for some time, an exciting exploration is on the way.We can learn from the first paragraph that________
| A．all the scientists wanted to live on Mars |
| B．people have had a better knowledge of Mars nowadays |
| C．spaceships have been sent up to Mars since 1960s |
| D．all the water on Mars has been gone for ten billion years |
The MAVEN spacecraft has been launched with the purpose of________
| A．analyzing the change of the atmosphere on Mars |
| B．assisting Curiosity in studying the surface of Mars. |
| C．analyzing what is contained in Mars’ air |
| D．checking whether water still exists on Mars |
It can be inferred from, the text that__________．
| A．many different tasks will be given to MAVEN when it lands on Mars |
| B．many spacecrafts are working around Mars to study its water |
| C．more wonderful things about Mars will be found in the future |
| D．more spacecraft will be sent up to help Curiosity |
What is the best title of this text?
| A．A new finding on Mars |
| B．A new spacecraft sent to Mars |
| C．The rapid development of Mars |
| D．The great change of the Mars’ atmosphere |
Finding a friend doesn’t seem like a difficult job. However, bad friends are easier to find than good friends these days. If you’re sitting there and wondering if you have a bad friend, let me define it for you.
A bad friend is someone whose jealousies and insecurities outweigh their love for someone. They night want to be a good friend but they’re too messed up in their own head to ever actually do it. They wonder if their friends are going out without them or if they’re being forgotten and left behind. People who are violently insecure don’t have what it takes to be the quality of a friend.
Bad friends are narcissistic(自恋的).They look for any opportunity to bring the conversation back to them. Worse, they might not even be aware that they’re doing it. In their mind, they might think they are the best friend ever, which is truly frightening.
Bad friends are quick-change. They’re by your side when you’re fun and you have something to give them but as soon as you’re going through a difficult time, they will become indifferent quickly. They won’t bring you cold medicine. They won’t give you a ride to the doctor, everything they do is self-serving.
If you find a friend who has these same characteristics, send them to your bad friend list immediately. Your friends are supposed to be the solution to your problems, not the source.
I believe your twenties are a time when you need positive and helpful friends. In such a time, friendships aren’t easy to maintain like they once were in school. Now we actually have to put work into it, we have to make a conscious effort to keep the friendship going. You need to ask yourself, “Is this person worth it? Do they treat me like a fool or what?” if your have doubts, try to make them clear by considering the past experiences. Toxic(有毒的) friendships do nothing but drag you down. My point is that you have to take care of yourself and stop getting in touch with your bad friends. Only surround yourself with people who bring out the best qualities in you. It may sound cruel but it’s true,.The author believes that we can easily find a .
| A．close friend | B．poor friend |
| C．good friend | D．bad friend |
Bad friends give the author the following impressions EXCEPT being .
| A．outgoing | B．insecure |
| C．narcissistic | D．self-centred |
We can infer from the passage that a bad friend will when you have trouble.
| A．feel worried as you do | B．try hard to help you out |
| C．do nothing but leave you | D．pay more attention to you |
In the last paragraph, you are advised .
| A．not to treat your friends like fools |
| B．not to keep a terrible friendship |
| C．not to be a bad friend of others |
| D．not to doubt but ask yourself |
What is the purpose of the passage?
| A．To tell us finding a friend is not an easy job for everyone. |
| B．To help us know about bad friends and get rid of them. |
| C．To encourage us to make more friends in school. |
| D．To advise us not to treat our close friends badly. |
The deadliest Ebola(埃博拉病毒) outbreak in recorded history is happening right now. The outbreak is unprecedented(空前的) both in the number of people who have gotten sick and in the geographic scope. And so far it’s been a long battle that doesn’t appear to be slowing down.
Ebola is both rare and very deadly. Since the first outbreak in 1976, Ebola viruses have infected thousands of people and killed roughly killed 60 percent of them. Symptoms can come on quickly and kill fast.
The current outbreak started in Guinea sometime in late 2013 or early 2014. It has since spread to Sierra Leone and Liberia, including some capital cities. And one infected patient traveled on a plane to Nigeria, where he spread the disease to several others and then died. Cases have also popped up in various other countries throughout the world, including in Dallas and New York City in the United States.
The Ebola virus has now hit many countries, including Guinea, Liberia, Sierra Leone, Nigeria, Senegal, and the United States. The virus, which starts off with flu-like symptoms and sometimes ends with bleeding, has infected about 6,500 people and killed more than 3,000 since this winter, according to the World Health Organization on September 30, 2014.
There are some social and political factors contributing to the current disaster. Because this is the first major Ebola outbreak in West Africa, many of the region’s health workers didn’t have experience or training in how to protect themselves or care for patients with this disease.
Journalist David Quammen put it well in a recent New York Times article, “Ebola is more dangerous to humans than perhaps any known virus on Earth, except rabies(狂犬病) and HIV. And it does its damage much faster than either.”
Hopefully, researchers are working to find drugs, including a recent $50 million push at the National Institutes of Health. And scientists are working on vaccines(疫苗), including looking into ones that might be able to help wild chimpanzees, which are also susceptible to the disease. The first human Ebola vaccine trial is scheduled to start in the spring of 2015.According to the passage, which of the following about Ebola is true?
| A．The Ebola outbreak now is the biggest one in history. |
| B．Ebola breaks out quickly but it is under control now. |
| C．Ebola is deadly and common so it kills a lot of people. |
| D．Ebola killed about 60 thousand people quickly in 1976. |
The Ebola virus was brought to Nigeria by .
| A．a flying bird | B．an infected passenger |
| C．hot African weather | D．a health organization |
The symptoms of Ebola at the beginning are more like those of .
| A．flu | B．rabies |
| C．HIV/AIDS | D．internal bleeding |
The last paragraph mainly tells us that .
| A．it will be a huge waste when researchers spend lots of money finding a cure |
| B．the vaccines can be effective to wild chimpanzees but not to the humans |
| C．there will be an optimistic future in which we can defeat the disease |
| D．we can use the vaccine to cure the patients completely in 2015’s spring |
What is the best title of the passage?
| A．Ebola ---- The African Local Disaster |
| B．Ebola ---- The Newly-Found Disease |
| C．Ebola ---- A More Effective Vaccine |
| D．Ebola ---- The Deadly Virus Outbreak |
Liz had been bleeding for a long time! She was my closest professional colleague and good friend at the time when we worked in an IT company. It was her first day back at work after an operation and I thought she should have taken a few more days to recover.
Realizing that we couldn’t stop the bleeding, we headed to the emergency room and spent hours there waiting to be seen. After the treatment, I drove her to my apartment. I had to leave her in my apartment while I dashed off to take a final exam for a very important course I was taking. Upon my return, we decided Liz was in a good enough condition to sustain a trip back from my Northern Virginia apartment to her home in Maryland.
Although it was nearly midnight and we were both exhausted, we still decided to set off. Unfortunately, in a not particularly safe part of town, we heard my car make a strange noise, and then ti was shaking violently as we drove along. Quickly, I stopped the car in the road and found a tire had blown out. Not knowing how to change a tire and feeling scared, I was trying out to figure out what to do next. Liz, weak from losing all that blood all day and weighing only about eighty pounds to begin with, came out and tried to help me. I had to scream at her to get back in the car and relax.
Within seconds, a taxi pulled up behind us. A huge man appeared and began walking toward us. I felt that the blood drained out of my face and I nearly fainted in fear.
“Got a flat tire, girls?” he asked.
“Yes,” I answered in a trembling voice.
In no time at all, the man changed the tire for us and rushed off back to his taxi. He refused any payment and did not even tell me his name. He would never know how badly we needed his services that particular evening. And I, with a grateful heart, will never forget his kindness.The author thought that Liz was bleeding because .
| A．she worked too hard in an IT company |
| B．she had an operation but didn’t rest enough |
| C．she hurt herself in the workplace carelessly |
| D．she had a long trip from her house to the company |
What was the author doing when Liz was in her apartment?
| A．She was seeing a doctor. |
| B．She was waiting for help. |
| C．She was taking an exam. |
| D．She was travelling in Maryland. |
According to the paragraph 3, which of the following is true?
| A．The author decided to send Liz back because they rested well. |
| B．The car’s tire blew out when they reached a safe place in the town. |
| C．The author felt puzzled as she didn’t know how to change tire. |
| D．Liz came out to help because she was strong enough. |
Seeing the man coming out of the taxi, the author felt .
| A．frightened | B．delighted |
| C．annoyed | D．Excited |
The passage is intended to .
| A．report a medical emergency |
| B．show us how to change a car tire |
| C．warn us of the danger in the town |
| D．tell us about a midnight assistance |
Hilary Smith belonged to a good family. But by the age of twenty, he had spent all the money the good old family had. He then had some trouble with the bank and was put in prison. He escaped from the prison and ran to Australia without delay.
Hilary did not like Australia and Australia did not like Hilary. What he could do seemed to be one of two things: die or work. Then he remembered that he was not alone in the world. He had an aunt.
She was his father's only sister, but his father used to say she brought no glory to the family. Hilary, of course, tried to discover what she had done. It seemed that she had failed to marry a nobleman. Instead, she had chosen a husband who was connected with "trade". Of course as soon as she became "Mrs. Parks", her brother considered her dead. Later on, Mr. Parks died and left her a lot of money; but that did not bring her back to life in her brother's opinion.
Hilary discovered his aunt's address. Fortunately she remained faithful and honest to him even after she fell ill. So Hilary's star shone again, and soon he moved into her house and lived as comfortably as a sailor who had just reached harbor. He had only about a sixpence in his pocket.
One thing was soon clear: his aunt was seriously ill, and nothing could cure her illness. Hilary was very worried. Fate had found a home for him, and was now going to throw him out of it. There was only one thing that could save him: her will.
"Will?" she said, "yes, I have made one. That was when I was a girl and had not much money. I left all my money to some religious people."
"Didn't you make another will when you were married?" Hilary asked.
His aunt shook her head. "No," she said in a low voice, "There was no need. When I finally had a lot of money I found 1 had no relations."
On the next day he went to the public library and examined a book of law. It told him what he already believed. When a woman is married, an earlier will loses its value. A new will must be made. If no new will is made, the money goes to the nearest relation. Hilary knew that he was his aunt's only relation. His future was safe.
After a few months had passed, Hilary's problems became serious. He badly needed money. He had expensive tastes, and owed a lot of money to shopkeepers. They trusted him because his aunt was rich; but the debt was terrible.
Unfortunately his aunt did not want to discuss money matters at all. In the end they had a quarrel about the small amount of ten pounds. Hilary was not very angry. He began to wonder about a new problem. Was it kind to want his aunt to live any longer? Was it not better for her to die now? While he was considering what to do, his aunt told him that she was going to send for her lawyer. So she was going to make a new will, Hilary thought. She might leave all her money to someone else. Soon he reached a clear decision. He must do a great kindness to the poor old woman.
One night when the old servant who had been nursing his aunt went off, he doubled the amount of some medicine. The total amount was too great and it could just put her to sleep forever.
"Thank you," his aunt took the glass from his hand with a grateful look." I want, more than anything, to sleep, and never to wake up again. Is that what you wish, Hilary? Don't blame me if I have some doubts about what you intended to do. Sick people get these ideas, you know. One thing I ought to explain to you. Mr. Parks never married me. He already had a wife and couldn't marry again. That made your foolish father very angry with me...Well, if I am alive tomorrow I shall make another will in your favor. If I die tonight, you'll get nothing...No, Hilary, don't try to take the glass away. If you do that, I shall know; and I don't want to know. Good night, Hilary."
Then, very carefully, she raised the glass to her mouth and drank.From the story ,we learn that Hilary's aunt was ______.
| A．bad-tempered and lonely | B．kind-hearted and wise |
| C．careless about money | D．cruel to her niece |
Why did Hilary's father consider his aunt dead?
| A．Because they lost contact with each other after her marriage. |
| B．Because she married a businessman with a wife against his will. |
| C．Because she broke away from the family for a better life. |
| D．Because he thought she was a shame to the family |
The underlined sentence "He must do a great kindness to the poor old woman" in paragraph 11 suggests that Hilary Smith ______.
| A．was determined to put his aunt's life to an end |
| B．decided to do his aunt a favor to call in a lawyer |
| C．made up his mind to take good care of his aunt |
| D．would help his aunt to donate all her money to religious people |
Which of the following is the focus of the story?
| A．Hilary's aunt's money. | B．Hilary Smith's debts. |
| C．The intended murder. | D．Hilary's aunt's marriage. |
According to the law book,_____.
| A．Hilary's aunt is not allowed to make a new will. |
| B．the money will go to Hilary after his aunt dies without a new will. |
| C．Hilary's aunt must leave the money to the religious people after she dies. |
| D．Hilary must look after his aunt till her death because he is the only relation. |
Which detail from the story is the climax of the story?
| A．Hilary escaped from the prison. |
| B．Hilary quarreled with is aunt about ten pounds. |
| C．Hilary's aunt drank the medicine her nephew prepared for her. |
| D．Hilary's aunt made a will to leave all her money to someone else. |
You never see him, but they're with you every time you fly. They record where you are going,how fast you're traveling and whether everything on your airplane is functioning normally. Their ability to withstand almost any disaster makes them seem like something out of a comic book.They're known as the black box.
When planes fall from the sky, as a Yemeni airliner did on its way to Comoros Islands in the India ocean June 30, 2009, the black box is the best bet for identifying what went wrong. So when a French submarine (潜水艇) detected the device's homing signal five days later, the discovery marked a huge step toward determining the cause of a tragedy in which 152 passengers were killed.
In 1958, Australian scientist David Warren developed a flight-memory recorder that would track basic information like altitude and direction. That was the first mode for a black box, which became a requirement on all U.S. commercial flights by 1960. Early models often failed to withstand crashes, however, so in 1965 the device（装置） was completely redesigned and moved to the rear of the plane – the area least subject to impact – from its original position in the landing wells (起落架舱). The same year, the Federal Aviation Authority required that the boxes, which were never actually black, be painted orange or yellow to aid visibility.
Modern airplanes have two black boxes: a voice recorder, which tracks pilots' conversations,and a flight-data recorder, which monitors fuel levels, engine noises and other operating functions that help investigators reconstruct the aircraft's final moments. Placed in an insulated ( 隔绝的) case and surrounded by a quarter-inch-thick panels of stainless steel, the boxes can withstand massive force and temperatures up to 2,000℉. When submerged, they're also able to emit signals from depths of 20,000 ft. Experts believe the boxes from Air France Flight 447, which crashed near Brazil on June 1,2009, are in water nearly that deep, but statistics say they're still likely to turn up. In the approximately 20 deep-sea crashes over the past 30 years, only one plane's black boxes were never recovered.In Paragraph 1，the author wants to say the black box_________.
| A．is an necessary device on an airplane |
| B．comes from a comic book |
| C．can prevent disasters |
| D．can control the function of an airplane |
From the black box on the Yemeni airliner_________could be found.
| A．the scene of the crash and the degree of the damage |
| B．the total number of passengers on board |
| C．data for analyzing the cause of the crash |
| D．homing signals sent by the pilot before the crash |
Why was the black box redesigned in 1965?
| A．New materials became available by that time. |
| B．The early models often got damaged in the crash. |
| C．Too much space was needed for its device. |
| D．The early models didn't provide the needed data. |
The black boxes were painted orange or yellow to_________.
| A．distinguish them from the colour of the plane. |
| B．warn people to handle them with care |
| C．make them easily identified. |
| D．obey the international standards. |
What do we know about the black boxes from Air France Flight 447?
| A．There is still a good chance of their being recovered. |
| B．There is an urgent need for them to be reconstructed. |
| C．They have stopped sending homing signals. |
| D．They were destroyed somewhere near Brazil. |
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