题目内容
（请给出正确答案）
A、cell
B、blood
C、white blood cell
D、red blood cell
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更多“Factors that may suppress erythropoiesis include chronic debilitating diseases and endocrine disorde…”相关的问题
| 阅读理解。 |
| Alzheimer's disease affects millions of people around the world. American researchers say the disease will affect more than one hundred million people worldwide by the year twenty fifty. That would be four times the current (现在的) number. Researchers and doctors have been studying Alzheimer's patients for a century. Yet the cause and cure for the mental (智力的) sickness are still unknown. However, some researchers have made important steps towards understandingit. Several early signs of the disease involve (涉及) memory and thought processes. At first, patients have trouble remembering little things. Later, they have trouble remembering more important things, such as the names of their children. There are also some physical tests that might show who is at risk of developing Alzheimer's disease. The tests look for proteins (蛋白质) in brain and spinal cord fluid (脊髓). The proteins appear to be found only in people with the disease. The protein tests correctly identify (确定) the presence of the disease in about ninety percent of patients. Now, a much simpler physical test to predict Alzheimer's risk has been developed. Researchers found that trouble with the sense of smell can be one of the first signs of Alzheimer's disease. Using this information, they developed a test in which people were asked to identify twelve familiar smells. These smells included cinnamon (桂皮), black pepper, chocolate, paint thinner (涂料稀释剂), and smoke. The study continued for five years. During this period, the same people were asked to take several tests measuring their memory and thought abilities. Fifty percent of those who could not identify at least four of the smells in the first test had trouble with their memory and thinking in the next five years. Another study has shown a possible way to reduce a person's chances of developing Alzheimer's disease in old age. Researchers in Chicago found that people who use their brains more often are less likely to develop Alzheimer's disease. Those who read a newspaper, or play chess or word games are about three times less likely to develop the condition. Researchers say they still do not know what causes Alzheimer's disease. But they say these findings might help prevent the disease in the future. |
| 1. What's the main idea of the passage？ |
[ ] |
| A. Some early signs of the Alzheimer's disease. B. Some physical tests about Alzheimer's disease. C. The research about Alzheimer's disease. D. The patients of Alzheimer's disease. |
| 2. How many Alzheimer's patients now around the world？ |
[ ] |
| A. 100 million B. 25 million C. 400 million D. 20million |
| 3. What is not the early sign of the Alzheimer's disease according to the passage？ |
[ ] |
| A. Poor memory. B. Proteins exist in the brain. C. Trouble with the sense of smell. D. Less use of the brain. |
| 4. What does the underlined word "it" in paragraph 1 refer to？ |
[ ] |
| A. Alzheimer's disease. B. Alzheimer's patients. C. The cause and cure. D. The research. |
| 5. According to the passage, we can learn that _____. |
[ ] |
| A. there are no proteins in the brains of the people with no Alzheimer's disease B. the people who often use their brains will not get Alzheimer's disease C. researchers and doctors have found ways to cure Alzheimer's disease D. the people who have the trouble with the sense of smell will certainly suffer from Alzheimer's disease |
| 阅读理解。 |
| Americans have never before exercised and dieted as eagerly as they are doing today. As a result, they do not only look younger and slimmer, but feel better. Because of increased physical fitness, life expectance in the nation has risen to seventy-three years, with fewer people suffering from heart disease, the nation's number one killer. Jogging (慢跑 ), the easiest and cheapest way of improving the body, keeps over 30million people of all ages on the run. For the price of a good pair of running shoes, anyone anywhere can join the race. Dieting, too, has become a national pastime. Promoters of diets that eliminate eating one thing or another, such as fats or carbohydrates (碳水化合物 ), promise as much as 20- pound weight losses within two weeks. Books describing such amazing diets always head up (居……之首 )the best-seller lists because people who are overweight want to lose weight quickly and easily. Nevertheless, jogging and dieting, carried to extremes, can be harmful. Many confused joggers overdo and finally suffer from ankle and foot damage. Dieting, fortunately, becomes only a temporary means for shedding a few pounds while the body lose the balanced nutrition (营养 )it requires, so most dieters cannot keep on diets. Above all, common sense should be the keystone for any dieting and exercise plan. |
| 1.The main idea of this passage is that ________ . |
| A. both jogging and dieting can improve your health B. exercise and improved diet has raised the American's life expectance C. people, who jog and diet wisely, will be healthier than those who do not D. diet and exercise harm rather than benefit health |
| 2. According to the passage, which of the following statements is TRUE？ |
| A. Jogging can damage the body because it is too tough an exercise. B. Diets are so popular because they are on the best-seller lists. C. Americans now live to be 73years old. D. Exercise and diet are more widespread in America than ever before. |
| 3. It is implied but not stated that ___________ . |
| A. heart disease is the number one killer among Americans B. exercise and dieting bring about spiritual as well as physical well-being C. people don't stay on a diet because it doesn't work D. a 20-pound weight loss within two weeks is too much for the body |
| 4. The best title for this passage is ___________ . |
| A. Jogging and Diet B. Exercise and Health C. Physical Fitness D. Life Expectancy and Diet |
A、incomplete sentence
B、misplaced modifier
C、comma-split sentence
D、fused sentence
A、"a deliberate intervention undertaken with the express intention of ending a life, to relieve intractable suffering”
B、“termination of life by a doctor at the request of a patient”
C、an easy, painless, happy death, during which it was a “physician’s responsibility to alleviate the ‘physical sufferings’ of the body"
D、“painless inducement of a quick death”
A、the suffering of a patient
B、the request of a patient
C、the doctor’s intervention
D、the agent’s motive
A、an agent
B、a subject
C、an intention
D、a causal proximity
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