Success comes from good habits, determination and efforts. （）, nobody can succeed

A.However

B.Therefore

C.Instead

D.Besides

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When it comes 21 smart eating for your heart, think about short-term fixes and 22 your life with a straightforward approach that will serve you well for years to come.
Smart eating goes beyond analyzing every bite of food 23 you lift to your mouth. “In the past we used to 24 that specific amounts of individual nutrients were the key 25 good health,“ says Linda Van Horn, chair of the American Heart Association Nutrition Committee. “26 now we have a different understanding of healthy eating and the kinds of food necessary to 27 heart disease and general disease,” she adds.
Scientists now focus 28 the balance of food eaten over several days or a week rather than on the number of milligrams of food 29 at each meal.
Fruits, vegetables and wholegrain foods, for example, provide nutrients and plant-based compounds 30 for good health. “The more we learn, the more 31 we are by the wealth of essential substances they 32,” Van Horn continues, “and how they 33 with each other to keep us healthy.”
You’ll automatically be 34 the right heart-healthy track if vegetables, fruits and wholegrain foods make 35 three quarters of the food on your dinner plate. 36 in the remaining one quarter with lean meat, chicken, fish or eggs.
The foods you choose to eat and those you choose to 37 clearly contribute to your well-being. Without 38 each small decision that you make in this field 39 can make a big 40 on your health in the years to come.

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Computers have become so necessary for modern living that it is difficult to believe they are a relatively recent invention. Undoubtedly, they have proved valuable, but they also have disadvantages. For example, they have increased our already large number of crimes.
Hacking was the first computer crime that most of us became aware of. By using their computing expertise, hackers can gain unauthorized access to someone else’s computer and make use of the data they find there. They may, for example, find lists of their competitors’ clients and use these lists to build up their own businesses or they may use hacking technology to find out a rival company’s plans. Other hacking activities may be more obviously criminal, because hackers may log on to financial data in someone else’s computer and alter it illegally or use it for fraudulent（欺诈的） purposes.
The possibility of serious financial fraud has been greatly increased by the modern practice of purchasing goods through the Internet. Apparently, the use of credit cards to pay for purchases has led to many people being swindled y （骗取）out of a great deal of money. Banks are working hard to improve online security and to provide safeguards for customers, but frauds are working just as hard to improve their techniques of deceiving people.
Many computer users worry about their systems being affected by computer viruses. People who introduce these bugs into other people’s computer programs may not intentionally commit a crime but may do so as an act of mischief. The motive does not really matter to people whose data has been deleted or altered or whose files have been corrupted.
Computers are part of a highly technical method of working, in which there are constantly new developments. Unfortunately, there is also a constant stream of new developments in the fraud industry associated with them. All computer users must be on their guard.

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空气质量不但对人类的生活质量有重大影响，而且影响着地球上的其他生物。我们应该有意识地保护自然环境，不断改善空气质量，并努力提高人类的生活水平。因此，防治空气污染和控制污染物排放尤其重要。

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Directions:For this part, you are required to write a letter of invitation based on the outline given elow, Please write it on the ANSWER Sheet.
假设你是李华，你得知一场太极拳比赛将在你所在的城市举行，而你的外国朋友Tom是太极拳爱好者。请你给Tom写一封邀请信，内容应包括：
1.告知比赛的举办时间和地点；
2.介绍比赛举办的目的；
3.陈述参加比赛的益处。

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