A computer virus is a program or piece of code that is loaded onto your computer without your knowledge and runs against your wishes. All computer viruses are manmade. Here are some virus prevention tips.
Do not open any files attached to an e-mail from an unknown, suspicious or untrustworthy source.
Do not open any files attached to an e-mail unless you know what it is, even if it appears to come from a dear friend or someone you know. Some viruses can replicate(复制) themselves and spread through e-mail. Better be safe that sorry and confirm that they really sent it .
Do not open any files attached to an e-mail if the subject line is questionable or unexpected. If the need to do so is there always save the file to your hard drive before doing so.
Delete chain e-mails and junk e-mail. Do not forward(转寄) or reply to any of them. These types of e-mail are considered spam(垃圾邮件), which contains lots of annoying advertisements and useless information.
Do not download any files from strangers.
Be careful when downloading files from the Internet. Ensure that the source is a legitimate(合法的)and reputable one. Verify(证实)that an anti-virus program checks the files on the download site. If you are uncertain, don’t download the file at all or download the file to a floppy(软盘)and test it with your own anti-virus software.
Update your anti-virus software regularly. Over 500 viruses are discovered each month, so you’ll want to be protected. These updates should be at least the products virus signature files. You may also need to update the product’s scanning engine as well.
Back up(备份) your files on a regular basis. If a virus destroys your files, at least you can replace them with your backup copy. You should store your backup copy in a separate location from your work files, one that is preferably not on your computer.This passage mainly tells us .
A.What a computer virus is |
B.how to use e-mail safely |
C.how to use computers safely |
D.how to prevent computer viruses |
Which of the following statements about computer virus is TRUE?
A.A computer virus is a kind of worm |
B.Not all computer viruses are manmade |
C.Computer viruses run according to our wishes |
D.A computer virus is a program or piece of code. |
When we use e-mail, we should .
A.open all the files we receive |
B.open any file even if we don’t know what it is |
C.not open any files if the subject line is questionable |
D.forward or reply to junk e-mail. |
Which of the following statements is NOT true?
A.We’d better not down load any files from strangers. |
B.We’d better download files from a legitimate and reputable source. |
C.We should update our anti-virus software regularly. |
D.We should store our backup copy in the same location as our work files. |
With alarming regularity, we read about oil tankers having accidents near land and the terrible consequences of the oil spills(泄露) on people, nature, and the environment.
Millions of dollars have been used in developing special chemicals to help dismiss the spills and to clean up the animals, beaches, and land spoiled by the oil.Unfortunately, when many of these chemicals are used, more damage is caused to the environment, especially to lives in the sea.
Of all of today’s environmental disasters, an oil spill may actually be one of the least serious.Although oil is poisonous, it is a natural material.In the end, it breaks down naturally.There are, of course, long-term effects, but it is usually more serious in the short term.
Nature by itself works better than chemical materials, but when there is a spill we demand that governments act immediately with as much hi-tech knowledge as possible.In 1967 the tanker Torrey Canyon sank off the Sicily Isles near the coast of England and spilled 120,000 tones of oil into the ocean.If you go there today, you will find it hard to see any sign that it ever happened.
Governments seem to accept the risk of transporting millions of tons of oil by ship every day so that we can fill up our cars and drive around and cause even more environmental damage.Interestingly, the biggest companies in the world produce cars, and the next biggest supply the gasoline to make them run!
We should be thinking more about reducing our dependency on oil.Governments should be encouraging research into new technologies, such as cars run by solar power(太阳能), electricity, hydrogen, and so on.Much of this research has, in the past, been held back by the oil, gas, and coal.
If the world’s millions of cars were 10% more efficient(高效的)— and the industry could easily produce cars at least twice as efficient — we would need many fewer tankers crossing the oceans each year.If this happened, the risks of oil spills would be reduced, and the air we breathe would be cleaner and fresher, too.What is the passage mainly talking about?
A.Oil tanker accidents. | B.Oil spills pollution. |
C.What oil pollution is. | D.How to reduce oil pollution. |
How does the author support the idea that oil spills are not as serious as people believe?
A.By giving a description. | B.By making an argument. |
C.By giving an example. | D.By drawing a diagram. |
What does the underlined word “risk” in Paragraph 5 refer to?
A.Transportation depending more on oil. |
B.Poisonous oil breaking down naturally. |
C.Millions of tons of oil spilling into the sea. |
D.More environmental damage being caused. |
Which suggestion is made for reducing oil tank accidents according to the passage?
A.We should develop new technologies to cut oil use |
B.Tankers should not be allowed to sail near the coastlines. |
C.We should build safer oil tankers in the near future. |
D.Countries should build more oil pipelines under the sea. |
Volunteers, as an essential part of a successful world exposition, are a major channel for the public to participate in, serve and share the world exposition and a means to showcase the image of the host country and city.The following information is about the volunteer for the World Exposition 2010 Shanghai China.
I.Basic Requirements for Volunteers
Be willing to participate in voluntary services of Expo 2010;
Age limit: Expo Site volunteers must be born before April 30, 1992 and Expo City Voluntary Service Station volunteers before April 30, 1994;
Obey the laws and regulations of the PRC;
Be able to participate in training and relevant activities before the opening of Expo 2010;
Possess necessary knowledge and skills needed by the position;
Be in good health to meet the requirements of corresponding voluntary positions.
II.Further Information for Volunteers
Source
Residents of Chinese mainland, Hong Kong, Macau and Taiwan, as well as overseas Chinese, and foreigners can all apply to be the volunteers.
Signup methods
Applicants may log in onto the official websites for online signup.They may also consult or connect with the Expo Volunteer Stations.
Time
May 1 – December 31, 2009
III.Volunteer Training
Volunteer training includes general training, special training and position training.General training is carried out through the Internet, while special training and position training are provided through classroom lectures and field practice.
IV.Volunteer Types
Expo Site volunteers refer to those offering voluntary services to visitors and the Organizer in the Expo Site, mainly including information, visitor flow management, reception, translation and interpretation, assistance for the disabled, and assistance in media service, event and conference organization and volunteer management.
Information booth volunteers are stationed in the Expo’s information booths at key transportation centers, commercial outlets, tourist attractions, restaurants, hotels and cultural event places outside the Expo Site.They offer services including information, translation, interpretation and even first aid.What’s the purpose of this writing?
A.To recruit(招募) the volunteers for the World Expo 2010 |
B.To give some basic information of the World Expo 2010 |
C.To praise the hard work of the volunteers |
D.To attract people to visit the World Expo 2010 |
If you were born in April 1993, where can you be a volunteer?
A.In the Expo Site. | B.In the host country. |
C.In the Expo City. | D.In Chinese mainland. |
Shopping in the United States changes a lot.About ninety years ago most people shopped in small stores that were owned by one person or a family.Women went from the bakery to the butcher’s to the grocer and on to the fruit and vegetable seller in order to get their food for the week.Then, about sixty years ago, supermarkets were born.In a supermarket, people could get all the different kinds of food they needed without going to different stores.
The next big change in shopping in the United States was the shopping mall.A shopping mall is a group of stores under one roof.Because malls allowed people to shop without worrying about the weather, they soon became very popular.The mall became a place for people to socialize in addition to shopping.If you walk through a mall, you will see older people sitting, chatting and drinking coffee.Malls are places for teenagers to hang out.Many teens will often just “go to the mall” and spend time with their friends.
The recent change in American shopping was the superstore.Large chain stores such as Wal-Mart, Office Depot and Toys “R” Us have been built all across the United States.Because they are so large, they can buy goods at a great discount and sell them much cheaper than smaller stores.Sometimes, when they are built near small towns, many of the small town stores have to close.They just cannot compete with their giant neighbors.
And now, online shopping is becoming more and more popular all over the States.People are too busy to go to the physical stores, so they go shopping over the Internet.Online shopping has lots of advantages.For instance, online stores are usually available 24 hours a day.Searching or browsing online shops can be faster than browsing the physical stores.While, online shopping also has its disadvantages.People are at higher risk of being cheated on the part of the merchant than in a physical store.And privacy of personal information may be let out.Which of the following shows the right order of shopping development in the United States?
①small stores②superstores③shopping malls④shopping online ⑤supermarkets
A.①②③④⑤ | B.①⑤③②④ | C.②③④①⑤ | D.①⑤②③④ |
Which is the place for people to spend time with others according to the passage?
A.Small stores. | B.Supermarkets. | C.Shopping malls | D.Superstores. |
Why can the superstores sell products at much lower prices?
A.Because they can buy goods at a reduction in price. |
B.Because they are across the United States. |
C.Because they sell all kinds of products people need. |
D.Because they are built near small towns. |
What’s the disadvantage of online shopping according to the passage?
A.Wasting time. | B.Fixed prices. |
C.No chance to do physical activities. | D.Leaking personal information. |
From now on, never spend your precious time thinking of reasons for your failures and shortcomings. Instead, realize that the seeds of success were planted within you when you were born. Only you have the power to make those seeds grow.
The seeds, and the power to grow them, are contained in the most awes
ome machine ever created:the human mind. Success is a choice and not a chance. You were born a winner. You were born rich. You can be a success if only you make the right choice.
You cannot be successful without first developing your self-esteem. Your level of self-esteem is always based on the degree of control that you are able to exercise over yourself, and thus over your life. People with low self-esteem are people who do not believe that they have any power, or responsibility for their lives. They are the perennial(长期的) victims and martyrs. They are leaves tossed(摇摆) by the winds of chance blown about with any sudden change in the weather.
You can exercise control over your life only to the degree that you believe that you are responsible for everything that happens in your life. Failures think that everything happens by accident and chance. Successful people realize that they are responsible.
Everything happens as a result of something. If we can identify the cause, we can control the effect. We are responsible for what we choose to think and believe. One generally rises to the level that one expects. We are responsible for setting our expectations. Our success is dependent upon our level of confidence.
If you associate with positive-thinking people, you are definitely going to achieve success. On the contrary, the opposite happens. We are responsible for finding, planting, and nurturing the seeds that contain future victory, born from setbacks.
In short, in all areas of your life, whether they be financial, physical, emotional, or spiritual, you are responsible. Once you recognize this, accept it, and firmly believe it, you are on the road to success.People with low self-esteem are compared to leaves because they ______________ .
A.are ready to change their minds |
B.are easily affected by windy weather |
C.don’t have the power to face their fate |
D.can’t exercise control over themselves |
Losers would think that .
A.success is the result of hard work |
B.working hard will lead to success |
C.their failure is only because of bad luck |
D.they don’t make efforts to succeed |
It can be inferred from paragraph 5 that .
A.whether we will succeed depends on our attitudes |
B.developing confidence is the key to future success |
C.thoughts and beliefs are the result of creative mind |
D.setting our expectations is essential before taking action |
The last paragraph serves as .
A.the proof of the author’s points | B.the conclusion of the argument |
C.an introduction to another topic | D.a comparison between two views |
Which is the best title for the text?
A.Succ![]() |
B.The secrets of success. |
C.Develop our confidence. | D.How to achieve success. |
Heather Mills McCartney lives an admirable life, attending celebrity parties, meeting regularly with the rich and famous and doing meaningful work for charity. All who work with her admire and respect her. But Heather’s life hasn’t always been so easy. When Heather was only 9 years old, her mother abandoned her and her two brothers. At the age of 13, she ran away from home and ended up living on the streets in London. Eventually, however, her exceptional beauty led to a career in modeling. At that time, Heather also began helping with the war relief efforts in former Yugoslavia. Through her modeling and relief work, she soon became famous.
But in August 1993, at age 25 her life changed once again. She was crossing the street in London when a motorcycle crashed into her. She was so badly injured that the doctors had to cut off her left leg. After that, she discovered she frequently needed to change her artificial limbs. It was expensive and she felt it was a waste to just throw away the old one. It occurred to her to set up an organization that could deliver used artificial limbs to Yugoslavia and other war-torn countries. It was through her charity work that she met her husband Paul McCartney.
Throughout her life, Heather has risen above problems and focused on helping others. Her work with artificial limbs even earned her a nomination(提名) for the Nobel Peace Prize in 1996. Heather’s persistence and determination are what impresses anyone who knows her. Heather believes anyone can make a positive difference in the world.
This passage is mainly about _________.
A.Heather’s miserable life | B.Heather’s contributi![]() |
C.Heather’s success in her work | D.Heather’s belief in life |
Heather began her modeling career _________.
A.due to her mother’s encouragement |
B.after her brothers abandoned her |
C.because of her excellent intelligence and performances |
D.because she was especially beautiful |
Which of the following is Not true according to the passage?
A.Heather won the Nobel Peace Prize in 1996. |
B.Heather began her charity work while working as a model. |
C.Her artificial limbs had to be re![]() |
D.Heather has never been defeated by her problems. |
From the passage we can infer that people admire and respect Heath
er because
_________.
A.she had a lot of misfortunes during her childhood. |
B.she was a world-famous model |
C.she is determined and never gives in |
D.she made a great difference in the world |