于工业制造、天气预报和大数据分析, 而不是日常教学。

7. When did China have advantage over the USA in the Top500 computers?

A. Just about 10 years ago.

B. Since the list was released for the first time.

C. Just about 30 years ago.

D. Since the computer Sunway Taihu Light was made.

【解析】选D。细节理解题。根据第三段第一句可知自"神威•太湖之光"超级计算机发布后, 在超级计算机世界排名前500强里, 中国占167席, 而美国占165席, 中国第一次比美国占优势。

8. Which of the following statements is Not true?

A. In the top 10 list, the US has two more supercomputers than China.

B. It's very difficult to write software for the supercomputers.

C. The supercomputers are restricted to specialised applications because it is very hard to develop.

D. The top 10 list of computers is released every two years.

【解析】选D。推理判断题。根据第三段最后一句可知超级计算机世界前10排名是每年发布两次而不是每两年发布一次, 故D项错误。

The Diet Zone: A Dangerous Place

Diet Coke, diet Pepsi, diet pills, no-fat diet, vegetable diet. . . We are surrounded by the word"diet"everywhere we look and listen. We have so easily been attracted by the promise and potential of diet products that we have stopped thinking about what diet products are doing to us. We are paying for products that harm us psychologically and physically.

Diet products significantly weaken us psychologically. On one level, we are not allowing our brain to admit that our weight problems lie not in actually losing the weight, but in controlling the consumption of fatty, high-calorie, unhealthy foods. Diet products allow us to jump over the thinking stage and go straight for the scale(秤)instead. All we have to do is to swallow or recognize the word"diet"in food labels.

On another level, diet products have greater psychological effects. Every time we have a zero-calorie drink, we are telling ourselves without our awareness that we don't have to work to get results. Diet products make people believe that gain comes without pain, and that life can be without resistance and struggle.

The danger of diet products lies not only in the psychological effects they have on us, but also in the physical harm that they cause. Diet foods can indirectly harm our bodies because consuming them instead of healthy foods means we are preventing our bodies from having basic nutrients. Diet foods and diet pills contain zero calorie only because the diet industry has created chemicals to produce these wonder products. Diet products may not be nutritional, and the chemical that go into diet products are potentially dangerous.

Now that we are aware of the effects that diet products have on us, it is time to seriously think about buying them. Losing weight lies in the power of minds, not in the power of chemicals. Once we realize this, we will be much better able to resist diet products, and therefore prevent the psychological and physical harm that comes from using them.

【语篇概述】本文主要讲了节食产品对人们的影响, 主要包括节食产品对人们心理的伤害, 节食产品对人们身体的伤害。