DNA is one of the most important discoveries in science. DNA is the plan for the human being, as a blueprint is the plan for a building. DNA makes a person look the way he does. A person’s DNA comes from a mixing of his parents’ DNA. That’s why a child looks like his parents. But, besides controlling things such as height and hair color, DNA can also give people diseases. Scientists are now studying DNA to cure diseases.
In the seventies, scientists developed a process called recombinant or RDNA. Although it sounds difficult to understand, RDNA simply means taking DNA from one animal or plant and putting it into another. By doing so, scientists can create new beings. In doing so, scientists can better understand DNA, especially what parts of DNA do what. After they understand DNA, scientists can begin to cure diseases. Often, the new being created will itself be the cure. Besides curing diseases, RDNA research can also do other things. For example, scientists in Japan have already created “super-trees”. Trees help humans, because they take CO2, which poisons humans, from the air and turns it into oxygen, which lets humans breathe. “Super-trees” do this too, but do it much faster. As things such as cars and factories have already put much CO2 in the area, “super-trees” are badly needed.
Unfortunately, there is a serious danger in RDNA research. Scientists want to create animals to cure old diseases, but these new animals may also create new diseases. It will be a serious problem if the animals escape from the science laboratory and into nature. As these animals are not natural, they may let loose many new powerful diseases.
As a result, RDNA research will create many solutions, but it will also create many problems.
From the passage, we can know that a boy looks like his parents because______.
| A．he is son of his parents. |
| B．his parents’ DNA decides his appearance. |
| C．he has received DNA from his father or his mother. |
| D．scientists have put some of his parents’ DNA into him. |
What does the underlined expression “let loose” probably mean?
| A．let … go free | B．get rid of |
| C．absorb | D．survive |
What is the best title for the passage?
| A．The DNA Research in Japan |
| B．A New Way of DNA Research in Japan. |
| C．The Causes and Effects of DNA Research |
| D．The Advantages And Disadvantages of RDNA |
The following statements are true about RDNA research EXCEPT ______.
| A．the research has been stopped because the created animals carry viruses |
| B．“super-trees” might be widely planted around the world |
| C．scientists have not completely understood DNA |
| D．RDNA research will benefit human beings a lot |
You might find this passage in / on a ________.
| A．fashion magazine | B．novel | C．scientific newspaper | D．sports newspaper |
Across the rich world, well-educated people increasingly work longer than the less-skilled. Some 65% of American men aged 62-74 with a professional degree are in the workforce, compared with 32% of men with only a high-school certificate. This gap is part of a deepening divide between the well-education well off and the unskilled poor. Rapid technological advance has raised the incomes of the highly skilled while squeezing those of the unskilled. The consequences, for individual and society, are profound.
The world is facing as astonishing rise in the number of old people, and they will live longer than ever before. Over the next 20 years the global population of those aged 65 or more will almost double, from 600 million to 1.1 billion. The experience of the 20th century, when greater longevity translated into more years in retirement rather than more years at work, has persuaded many observers that this shift will lead to slower economic growth, while the swelling ranks of pensioners will create government budget problems.
But the notion of a sharp division between the working young and the idle old misses a new trend, the growing gap between the skilled and the unskilled. Employment rates are falling among younger unskilled people, whereas older skilled folk are working longer. The divide is most extreme in America, where well-educated baby-boomers (二战后生育高峰期出生的美国人) are putting off retirement while many less-skilled younger people have dropped out of the workforce.
That even the better-off must work longer to have a comfortable retirement. But the changing nature of work also plays a big role. Pay has risen sharply for the highly educated, and those people continue to reap rich rewards into old age because these days the educated elderly are more productive than the preceding generation. Technological change may well reinforce that shift: the skills that complement computers, from management knowhow to creativity. Do not necessarily decline with age.what is happening in the workforce in rich countries?
| A．younger people are replacing the elderly |
| B．well-educated people tend to work longer |
| C．unemployment rates are rising year after year |
| D．people with no college degree do not easily find work |
what has helped deepen the divide between the well-off and poor?
| A．Longer life expectancies |
| B．Profound changes in the workforce |
| C．rapid technological advance. |
| D．A growing number of well-graduated. |
what do many observers predict in view of the experience of the 20th century?
| A．Economic growth will slow down. |
| B．Government budgets will increase. |
| C．More people will try to pursue higher education |
| D．There will be more competition in the job market. |
What is the result of policy changes in European countries?
| A．Unskilled workers may choose to retire early. |
| B．more people have to receive in-service training. |
| C．Even wealthy people must work longer to live comfortably in retirement. |
| D．People may be able to enjoy generous defined-benefits from pension plans. |
What is characteristic of work in the 21st century?
| A．Computers will do more complicated work. |
| B．More will be taken by the educated young. |
| C．Most jobs to be done will be creative ones. |
| D．Skills are highly valued regardless of age. |
Tour A--Bath & Stonehenge including entrance fees to the ancient Roman bathrooms and Stonehenge--￡37until 26 March and ￡39 thereafter.
Visit the city with over 2,000 years of history and Bath Abbey, the Royal Crescent and the Costume Museum. Stonehenge is one of the world’s most famous prehistoric monuments dating back over 5,000 years.
Tour B--Oxford & Stratford including entrance fees to the University St Mary’s Church Tower and Anne Hathaway's house一￡32 until 12 March and ￡36 thereafter.
Oxford: Includes a guided tour of England’s oldest university city and colleges. Look over the “city of dreaming spires(尖顶)”form St Mary’s Church Tower. Stratford: Includes a guided tour exploring much of the Shakespeare wonder.
Tour C—Windsor Castle & Hampton Court including entrance fees to Hampton Court Palace--£34 until 11 March and £37 thereafter.
Includes a guided tour of Windsor and Hampton Court, HenryⅧ’s favourite palace. Free time to visit Windsor Castle（entrance fees not included）. With 500 years of history, Hampton Court was once the home of four Kings and one Queen. Now this former royal palace is open to the public as a major tourist attraction. Visit the palace and its various historic gardens, which include the famous maze(迷宫)where it is easy to get lost!
Tour D--Cambridge including entrance fees to the Tower of Saint Mary the Great--£33 until 18 March and £37 thereafter.
Includes a guided tour of Cambridge, the famous university town, and the gardens of the 18th century.[来Which tour will you choose if you want to see England’s oldest university city?
| A．Tour A | B．Tour B | C．Tour C | D．Tour D |
Which of the following tours charges the lowest fee on 17 March?
| A．Windsor Castle & Hampton Court. |
| B．Oxford & Stratford |
| C．Bath &Stonehenge. |
| D．Cambridge. |
Why is Hampton Court a major tourist attraction?
| A．It used to be the home of royal families. |
| B．It used to be a well-known maze |
| C．It is the oldest palace in Britain |
| D．It is a world-famous castle. |
Your house may have an effect on your figure . Experts say the way you design your home could play a role in whether you pack on the pounds or keep them off. You can make your environment work for you instead of against you. Here are some ways to turn your home into part of your diet plan.
Open the curtains and turn up the lights . Dark environments are more likely to encourage overeating , for people are often less self-conscious（难为情）when they’re in poorly lit places--and so more likely to eat lots of food . If your home doesn’t have enough window light, get more lamps and flood the place with brightness.
Mind the colors. Research suggests warm colors fuel our appetites. In one study, people who ate meals in a blue room consumed 33 percent less than those in a yellow or red room. Warm colors like yellow make food appear more appetizing, while cold colors make us feel less hungry. So when it’s time to repaint, go blue.
Don’t forget the clock-or the radio. People who eat slowly tend to consume about 70 fewer calories（卡路里） per meal than those who rush through their meals. Begin keeping track of the time, and try to make dinner last at least 30 minutes. And while you’re at it, actually sit down to eat. If you need some help slowing down, turn on relaxing music. It makes you less likely to rush through a meal.
Downsize the dishes. Big serving bowls and plates can easily make us fat. We eat about 22 percent more when using a 12-inch plate instead of a 10-inch plate. When we choose a large spoon over a smaller one ,total intake（摄入） jumps by 14 percent. And we’ll pour about 30 percent more liquid into a short, wide glass than a tall, skinny glass.The text is especially helpful for those who care about_______.
| A．their home comforts | B．their body shape |
| C．house buying | D．healthy diets |
A home environment in blue can help people_________.
| A．digest food better | B．reduce food intake |
| C．burn more calories | D．regain their appetites |
What are people advised to do at mealtimes?
| A．Eat quickly. | B．Play fast music. |
| C．Use smaller spoons. | D．Turn down the lights. |
What can be a suitable title for the test?
| A．Is Your House Making You Fat? |
| B．Ways of Serving Dinner |
| C．Effects of Self-Consciousness |
| D．Is Your Home Environment Relaxing? |
The other day, I noticed a message on a friend’s page. It made me very sad. She says she is the one
who reaches out to people, but rarely do they reach out to her. So, after communicating with her for a while, I began to challenge my friends. “Contact someone right now. Send messages or call someone who you haven’t spoken to for a while, or who you only talk to when they message or call you. Let someone who may feel alone in the world right this moment know that they are not alone. That is my challenge to you. Please do it , and let me know once you have. Either by calling me back, or by sending me a message. Be the change that you want to see in the world. ”
The response was great. 28people liked my post, another 10 posted that they did, and I got about a dozen messages telling me that they did. And there was one very special message:
“I just want you to know what has happened. That day, I sent a message to a friend who I hadn’t heard from for a while. She and I talked for a whole day back and forth on messages and then on the phone. She said she was so incredibly sad. Nobody has spoken with her in two weeks. By the tone of her voice, and by the conversations we were having, I think she was about to take her own life(自杀). After our conversation, she has agreed to talk to someone. Your message of kindness has saved her. I can’t wait to tell you how thankful I am for people like you in the world, who care when nobody else will. I am proud to call myself your friend. Thank you! ”
I didn’t quite know what to say after reading the message. I was wondering how best to use it for greater good. I decided that sharing what we have done is the most powerful way. I know that I am a cheerleader when it comes to making the world a better place with kindness, because if I help someone, it makes me feel better. I do it because I need to feel better.What made the author unhappy?
| A．She can’t reach out to anyone. |
| B．No one responds to her friend. |
| C．None of her friends contacts her. |
| D．She has no time to visit her friends. |
What did the author challenge her friends to do?
| A．Turn to their friends for help. |
| B．Visit their families and relatives. |
| C．Contact someone in need of help. |
| D．Share their problems on their page: |
What do we know about the special message?
| A．Someone was saved by her friend. |
| B．People were too busy to talk with others. |
| C．The girl was sad because no one liked her. |
| D．The author helped her friend by calling her. |
Which word can best describe the author?
| A．Determined. | B．Cold-hearted. |
| C．Stubborn. | D．Inspiring. |
Since around the later part of the 1950s, society started to realize that tobacco cigarettes caused health problems. As research progressed along with increasing numbers of people that developed lung cancer, emphysema, and other smoking related illnesses, cigarette smoking has become less accepted and popular. Unfortunately, the nicotine contained in cigarettes is one of the most addictive substances on the planet and makes quitting smoking one of the hardest things to do. In 2003, Chinese pharmacist, Hon Lik invented the electronic cigarette as a safer, and cleaner way to breathe in nicotine after his father, a heavy smoker, passed away from lung cancer attributed to smoking tobacco cigarettes.
Hon Lik applied for his first patent on the electronic cigarette in 2003 and afterwards introduced e-cigs to the Chinese market in the following year through his employer, Golden Dragon Holdings. Golden Dragon Holdings later changed the company’s name to “Ruyan” in order to better match the company’s name(Ruyan means “almost like smoke”)to the new product. Since the renaming, the Ruyan company has continued e-cigarette development and grown to be one of the largest global e-cig manufactures.
Dr.Sam Han, CEO of Cixi E-CIG Technology, Inc, Ltd. also has a number of e-cig related inventions, including four patents in the United States and two in China that are electronic cigarette and e-liquid technology related. Similar to Hon Lik’s father. Dr. Han was a heavy smoker for more than 40 years before beginning to work on electronic cigarette technologies in order to help himself and others make the shift to vapor smoking. Dr.Han continues to market and conduct R&D in e-cig related techonologies to this date.
After the successful deployment of Ruyan and Cixi E-CIG electronic cigarettes in China and Asia, the products started to be sold in significant quantities on the Internet.How many years is it since the electronic cigarette was first invented according to the passage?
| A．About 5 years. | B．About 11 years. |
| C．About15 years. | D．About 20 years. |
What’s the direct reason why Hon Lik invented the electronic cigarette according to the passage ?
| A．Tobacco cigarettes caused health problems. |
| B．Tobacco cigarettes were too expensive for customers to buy. |
| C．Quitting smoking became one of the hardest things to do. |
| D．His father died from lung cancer due to smoking tobacco cigarettes. |
Since when have Chinese smokers have been able to buy Hon Lik’s electronic cigarettes according to the passage?
| A．2000. | B．2003. | C．2004. | D．2005. |
What’s the correct order of the following events according to the passage?
①Hon Lik applied for his first patent on the electronic cigarette.
②Hon Lik’s father died from lung cancer because of smoking tobacco cigarettes.
③Hon Lik’s electronic cigarettes were introduced to the Chinese market.
④The name of the company Golden Dragon Holdings was changed to “Ruyan”.
| A．①③②④ | B．①④②③ | C．②④①③ | D．②①③④ |