| 阅读理解 |
 18 Feeling tired lately? Has a doctor said he can't find anything wrong with you? Perhaps he sent you to a hospital, but all the advanced equipment there shows that there is nothing wrong with you. Then, consider this:you might be in a state of subhealth (亚健康). Subhealth, also called the third state or gray state, is explained as a borderline state between health and disease. According to the investigation (调查) by the National Health Organization, over 45 percent of subhealthy people are middle-aged or elderly. The percentage is even higher among people who work in management position as well as students around exam time. Symptoms include a lack of energy, depression (压抑 ) , slow reactions, insomnia (失眠), agitation (焦虑 ), and poor memory. ()ther symptoms include shortness of breath, sweating and aching in the waistand legs. The key to preventing and recovering from subhealth, according to some medical experts, is to form good living habits, alternate work and rest, exercise regularly, and take part in open air activities. As for meals, people are advised to eat less salt and sugar. They should eat more fresh vegetables, fruits and fish because they are rich in nutritional (营养的 ) elements- vitamins and trace elements (微量元素)-that are important to the body. Nutrition experts point out that it is not good to eat too much at one meal because it may cause unhealthy changes in the digestive tract (消化道). They also say that a balanced diet is very helpful in avoiding subhealth. |
| 1. According to this passage, which of the following is right? |
| A. When you are in a state of subhealth, you should stay home and keep silent. B. When you are in a state of subhealth, you should go to see a doctor and buy some medicine. C. When you are in a state of subhealth, you should have yourself examined in foreign countries. D. When you are in a state of subhealth, you should find out the reasons and relax yourself. |
| 2. The key to preventing you from falling into a state of subhealth is that you should ______. |
| A. work hard B. sleep more C. form good living habits D. take more medicine |
| 3. As for food, experts suggested that _____. |
| A. we should never eat meat B. we should have meals with less salt and sugar C. we should eat less than usual D. we should have meals without salt and sugar |
| 4. The underlined word "alternate" in the sixth paragraph is closest in meaning to "_____ ". |
| A. arrange by turns B. take place C. keep up D. take up |