Sixty-five million years ago, an asteroid (小行星) that crashed on Earth led to the disappearance of the largest animals that have ever walked our planet – the dinosaurs. At least, this is what some scientists believe. But that accident happened so long ago. People have come to believe that we are free of threats from asteroids and everything else from space.
However, what happened on Feb 15 , 2013 was a reminder that we’re just as vulnerable as the dinosaurs once were. Two objects from space – a meteor (陨石) and an asteroid called 2012 DA14 – visited Earth’s atmosphere on the same day. The former fell in Russia, injuring 1,200 people, while the latter passed by Earth at a record-setting close distance.
Scientists had been expecting the asteroid since last year, but the meteor was a surprise. NASA’s telescope system only detects asteroids at least 50 meters in diameter (直径), which is just about the size of 2012 DA14. But the meteor was much smaller, which made it harder to spot.
But what if we do spot an asteroid that is headed right for Earth? There are several possible ways in which dangerous asteroids could be made to change its orbit. Which method is best depends on several factors and most importantly – how much time we have to stop it.
If there is enough time before the hit, we can send off a heavy spacecraft to travel alongside the asteroid. The gravity from the spacecraft would gradually change the rock’s orbit. Besides that, scientists could one day use sun-powered lasers to either make asteroids disappear or change their course. If there’s not enough time, we’ll have to go after the asteroid with a spacecraft and change its orbit with a crash. Finally, if things are truly desperate, there will be only one choice left – to use a nuclear bomb. That could turn the asteroid into a meteor shower, which would be even more dangerous.The author mentioned the asteroid that led to the dinosaurs’ dying out to ______.
| A．show that asteroids fall from space frequently |
| B．alert people about the possible danger of objects falling from space |
| C．inform readers about the constant threats the Earth faces |
| D．suggest that there are still many mysteries about the universe |
The underlined word “vulnerable” in the second paragraph probably means ______.
| A．unprotected | B．lonely | C．stupid | D．self-important |
Which of the following statements is TRUE about the meteor that fell to the Earth in Russia?
| A．It passed by the Earth at a close distance. |
| B．It was spotted by NASA’s telescope system a year ago. |
| C．It is about the same size as the asteroid that passed by the Earth. |
| D．It fell to the Earth and caused great damage to the local community. |
What is the main idea of the article?
| A．Learning about asteroids and meteors. |
| B．The threats of objects from space and possible solutions. |
| C．NASA’s latest technology to discover visitors to the Earth from space. |
| D．How to measure the damage of collisions from asteroids and meteors. |
Chinese reports say the country’s vast pool of cheap labor is getting smaller, which could hurt an economy that heavily depends on labor-intensive manufacturing.
The academy’s research shows that China’s rural labor surplus, the source of migrant workers for the country’s factories, is about 50 million people—far less than the previously estimated 150 to 200 million.
Jonathan Unger, director of the Contemporary China Center at the Australian National University, says fewer rural residents are willing to leave their farms today. This is partly because there are more employment opportunities in rural areas, and because agricultural prices have gone up.
“And at the same time taxes in the countryside, fees in the countryside have gone down because of new sets of government policies,” he explained. “So people are not eagerly forced in the way they were five, six years ago to leave the farm in order to earn enough money for their families.”
The Chinese Academy of Social Sciences says another reason for the reduced labor pool is the country’s population policy, which allows city residents to have just one child, and farmers up to two if the first one is a girl.
A UN study predicts that China’s workforce will reach its top in 2015 and then gradually drop. Some of China’s major manufacturing areas, such as Guangdong Province, already face labor shortages.
Some economists think these shortages are, at least for now, a regional rather than a national problem. Sun Mingchun, an economist with investment bank Lehman Brothers in Hong Kong, points out that there are still millions of people in China who can not find work.
57. According to the academy’s research, China’ rural labor surplus today is about _______.
A. 150 million B. 50 million C. 200 million D. 175 million
58. The reason why many rural residents don’t leave their farms today is ________.
A. the farmers are older than before.
B. the farmers are lazier than before
C. the farmers have much more money
D. there are more employment opportunities and agricultural prices have gone up
59. Which of the following is TURE according to the passage?
A. A study of UN estimates China’s workforce will come to the top in 2015.
B. No a study shows millions of people can’t find work in China.
C. The country’s population policy isn’t a reason for the reduced labor.
D. Five years ago, few farmers left their homes to earn money for supporting their families.
60. According to some economists, the shortage of Chinese workforce __________.
A. is a national problem B. is a regional problem
C. is not a problem D. can be solved easily
One of the most wonderful things about having a positive attitude is that it can touch many people, and it often exists in our everyday life.
Recently, I stopped by a store to get a newspaper and a bottle of drink. The young woman at the check-out counter said, “That’ll be three dollars in all please.” She then glanced down at the paper I was buying and said. “I’m sick and tired of all this negative stuff-on the front pages. I want to read some good news for a change.” She then said, “In fact, I think soemone should just publish a Good News newspaper--- a paper with wonderful, inspirational stories about people over-coming difficulty and doing good things for others. I’d buy one every day!” she then thanked me for coming in and said, “Maybe we’ll get lucky tomorrow; maybe we’ll get some good news.” And she laughed. She made my day.
The following day after my business appointments. I dropped by the same store again to pick up bottled water and a piece of newspaper, but a different young lady was behind the counter. As I checked out I said “Good afternoon” and handed her my money. She said nothing, not a word, not a smile or not a gesture. She just handed me my change and in a negative tone ordered “Next!”
It hit me right between the eyes: Two people, the same age; one made me feel great, and the other, well, made me feel that I had inconvenienced her by showing up.
Every morning you should ask yourself this important question. “Who do I want to be today? The Grouch(不高兴的人) or ‘The Good News Girl?’” Your answer will go a long way toward determining the joy and happiness that you will experience in your life.
53. What does the first salesgirl dislike according to her words?
A. Those who have bad manners.
B. The bad news in the newspaper.
C. The advertisements in the newspaper.
D. The bad news who break the laws.
54. After he had bought a newspaper on the first day the author _________.
A. was very lucky and excited that day
B. always remembered the girl’s word
C. read the news in the newspaper carefully
D. was in a pleasant mood the whole day
55. We learn from the passage that the salesgirl the author met the next day was ________.
A. humorous B. enthusiastic C. very cool D. positive
56. What does the underlined sentence in Paragraph 4 mean?
A. I was very surprised. B. I was especially angry.
C. I felt very unhappy. D. It hurt my heart badly.
“Human influenza viruses can survive and be infectious for several days when they are deposited on banknotes,” according to the latest study by Yves Thomas and his colleages in Switzerland. Scientists put different types of flu virus onto Swiss franc notes and found that they could survive from a few hours to more than a week. The results depended on the type of flu virus.
According to the study, Swiss-banknotes are mostly cotton covered by a nonporous resin(无孔树脂). Banknotes from other countries may be composed of different materials, and this could affect viral transmission. “Whether similar results would be obtained with banknotes from other countries and with different characteristics needs to be studied.” the authors wrote. In an interview with Reuters, Thomas said. “Our studies have convinced us that it is possible to catch the flu from banknotes, but the chances are very, very small and there is no cause for concern among the gneral population,” To be sure, many kinds of frequently touched surfaces could temporarily hide the flu virus. Broadly speaking, scientists consider the risk of transmission in this way to be low. Particularly if hand-washing and other hygiene measures are practiced.
Three things must happen for a flu virus to be transmitted from one person to another via money. First, a person who is infected with the flu virus must sneeze or cough onto the banknote. Next, an uninfected person would need to touch the money while the virus si still present. Finally, that person would need to put his hand in his mouth or pick his nose, says Thomas. The best defense against infection: follow public health guidelines and wash your hands frequently.
49. What does the underlined word “this” refers to in the second paragraph?
A. The time when people stay in a bank.
B. The fact that banknotes may consist of deferent materials.
C. The bank where people draw their money.
D. The country where the banknotes are in circlation.
50. From the last paragraph, we can know that an infected person should ________.
A. pay attention to his personal hygiene B. wash his hands after leaving a bank
C. be monitored at a bank D. not cough at a bank
51. What can we learn from the passage?
A. Any person who touches banknotes will become infected.
B. Different flu viruses stay on the surface of banknotes for different lengths of time.
C. The bank should not allow any infected person to enter.
D. Only banknotes in Switzerland can transmit the flu virus.
52. What is the best title for the passage?
A. Is it Dangerous to Stay in a Bank?
B. How to Avoid Being Infected with the Flu Virus?
C. Can You Catch the Flu from Handling Money?
D. Why Do People Refuse to Use Banknotes in Switzerland?
As a parent you have the responsibility to help your children understand money. But first you will need to understand your own attitude towards money, and make sure to practise what you teach.
Ask yourself what things that cost money are the most important to you. Also ask yourself what financial goals do you have for yourself and your family this year, in five years, and so on?
Take a minute to write down a list. Below are some ideas to get you started. There’s no right or wrong here. This exercise is just to help you grasp what money means to you so that you can help your children understand your values.
◆ Home
◆ Household expenses
◆ Education
◆ Recreation, entertainment
◆ Savings
◆ Charitable contributions
You can start discussing money when your children are as young as three years old. The best time to teach a child anything is when he or she shows an interest. So he prepared to start talking about money when your child starts asking you to buy candy or toys.
Begin by showing how money is exchanged for items or services. Show your children how money works by allowing them to buy something, such as a toy or a book.
Be open and honest, and explain to your children why they can or cannot have certain items. If you must say no to a child’s request to spend money, you might say, “You have enough toy trucks now.” Or, if the request is for multiple items, “You have a choice to make, between this toy and that one.”
You can start explaining the bigger picture once your children understand the basic function of money. Show an older child how money is used to provide for the whole family.
45. Why should parents understand their own money attitudes first?
A. To help their children earn money. B. To set an exampel to their children.
C. To help them set financial goals. D. To help them tell right from wrong.
46. Which of the following is NOT one of the major categories of things that cost money listed in the article?
A. Travel and investments. B. Household expenses.
C. Education and entertainment. D. Savings and charitable contributions.
47. Which of the following is NOT a way to teach the children about money?
A. Showing how money is exchanged.
B. Allowing children to buy whatever they like.
C. Explaining the limits involved in using money.
D. Having an open discussion about money.
48. According to the passage, when should parents start teaching a child about money?
A. When the child can understand its basic function.
B. When the child can understand how money is used to provide for the whole family.
C. When the child knows how to support a family.
D. As young as three, or when they start showing an interest.
The 149th anniversary of Washington University’s founding will be celebrated with a presentation of Distinguished Alumni(校友) Awards for six famous teachers and alumni for their outstanding professional achievements, public service, extraordinary service to Washington University, or all three. Among the sixd awards winners for this year is Chen Zhangliang.
Chen Zhangliang is one of China’s most famous scientists, who was born into a poor fisherman’s family in Fuqing City, Fujian Province in 1961. after graduating from a university at home, Chen went to the US for further study. Since coming to Washington University as a doctoral student in 1983 to study transgenic(转基因的) plant engineering, Chen’s academic career has focused on gene cloning and the development of disease-and-pest-resistant plants. He completed his doctoral degree in biology at Washington University in 1987 and returned to Beijing to establish the National Laboratory of Plant Genetic Engineering at Peking University.
A productive scholar, Chen has published many books and more than one hundred research papers. He holds over ten patents with an equal number pending(等待决定的). Currently he is president of China Agricultural University and vice president of Peking University.
In addition to his academic career, Chen is also founder and president of the Weiming Biotechnology Company, which produces many DNA recombinant drugs and vaccines. He’s also a representative of China’s National People’s Congress and vice chairman of China Biotechnology Association. In addition, he serves as vice chairman for the China’s National Youth Federation.
Among his many honors are the UNESCO Javed Husain Prize for Young Scientists and TIME’s Global 100 Roster of Young Leaders for the New Millennium, as well as the Science and Technology prizes from the Ministry of Education in China.
41. Chen Zhangliang takes part in the following activities EXCEPT __________.
A. the Chinese government’s work
B. the university’s management
C. the management of agriculture
D. the production of biochemistry medicines
42. Which of the following is NOT true according to the passage?
A. Chen Zhangliang gained a doctor’s degree at the age of 26.
B. It’s possible for Chen Zhangliang to obtain about 20 patents.
C. Chen Zhangliang established the genetic engineering laboratory in Beijing.
D. Distinguished Alumni Awards are mainly given to the students of the university.
43. What’s the passage mainly about?
A. An introdction to Washington University’s anniversary activities.
B. A brief introduction to a world-famous university.
C. The scientific achievements and honors of Chen Zhangliang.
D. The career development of Chen Zhangliang
44. This passage gives us the inspiration that ___________.
A. knowledge can change one’s destiny
B. wehre there’s a will, there’s a way
C. a good scholar can become an official
D. a good beginning is half done