One day, a poor boy who was trying to pay his way through school by sending newspapers door to door, was so hungry that he decided to beg for a meal at the next house.      However, he lost his nerve when a lovely young woman opened the door. Instead of a meal he asked for a drink of water. She thought he looked hungry so she brought him a large glass of milk. He drank it slowly, and then asked, "How much do I owe you?"      "You don't owe me anything," she replied. "Then I thank you from the bottom of my heart." With these words, Howard Kelly left that house.      Years later the woman became badly ill and was finally sent to the hospital in a big city. Dr. Howard Kelly, now famous, was called in. When he heard the name of the town she came from, a strange light filled his eyes. Dressed in his doctor's clothes, Dr. Kelly went into her room and recognized her at once. From that day on, he gave special attention to her, and decided to do his best to save her life.      At last the woman was saved. Dr. Kelly asked the business office to pass the final bill to him. He looked at it and then wrote something on the side. The bill was sent to the woman's room. She was afraid to open it because she was sure that it would take the rest of her life to pay for it off. Finally she looked, and the note on the side of the bill caught her attention. She read these words:         "Paid in full with a glass of milk, Dr. Howard Kelly."      Tear of joy flooded her eyes. Which is true about the boy and the woman? A) He was too shy to ask her for some water. B) She thought he was not hungry but thirsty. C) She never thought he would save her life later. D) She wanted him to pay for the glass of milk.
C

Elderly women who eat foods higher in potassium   are less likely to have strokes and die than women who eat less potassium-rich foods, according to new research in the American Heart Association. "Previous studies have shown that potassium consumption may lower blood pressure. But whether potassium intake could prevent stroke   or death wasn't clear," said Smoller, professor of the department of population health at Albert Einstein College of Medicine, Bronx, NY.  Researchers studied 90,137 women, aged from 50 to 79 for an average 11 years. They looked at how much potassium the women consumed, as well as if they had strokes, including ischemic strokes  , or died during the study period. Women in the study were stroke-free at the start and their average dietary potassium intake was 2,611 mg/day. Results of this study are based on potassium from food, not supplements. The researchers found: Women who ate the most potassium were 12 percent less likely to suffer stroke in general and 16 percent less likely to suffer an ischemic stroke than women who ate the least. Women who ate the most potassium were 10 percent less likely to die than those who ate the least. Among women who did not have high blood pressure, those who ate the most potassium had a 27 percent lower ischemic stroke risk and 21 perc ent reduced risk for all stroke types, compared to women who ate the least potassium in their daily diets. Among women with high blood pressure, those who ate the most potassium had a lower risk of death, but potassium intake did not lower their stroke risk.  "Our findings suggest that women need to eat more p otassium-rich foods. You won't find high potassium in junk food. Some foods rich in potassium include white and sweet potatoes, bananas and white beans." The U.S. Department of Agriculture recommends that women eat at least 4,700 mg of potassium daily. "Only 2.8 percent of women in our study met or went beyond this level. The World Health Organization's daily potassium recommendation for women is lower, at 3,510... It can be learned from the passage that   _  . A) Results of the research were based on potassium from medicine B) Researchers gave different amounts of potassium to the elderly women C) Elderly women need to keep a balance between sodium and potassium intake D) The effects of potassium intake on men and younger people are not yet known
D

We are going to talk again this week about higher education for disabled students who want to study in the United States.As we noted last time,there are no special colleges or universities for blind students.But there are for deaf students.One of them is Gallaudet University in Washington,D.C. Gallaudet is said to be the world's only liberal arts university where everything is designed for deaf or hard-of-hearing students.About 2,000 students attend Gallaudet.The cost for international students is about 33,000 dollars a year. Financial aid is available in the form of scholarships,but only after the first year of studies. Most scholarship aid goes to students in financial need who do well in their first year.One scholarship for international students is for deaf students from developing countries.Another is just for students from China.The university also offers an English Language Institute.But Gallaudet says this program does not guarantee  acceptance to the university. In the past year,students at Gallaudet protested against the administration's choice of a new president for the university.The protests led to the choice of a different president who is more popular with the students,Robert Davila.He is a former officer of the National Technical Institute for the Deaf.This technical college is in Rochester, New York.  It is one of the eight colleges in the Rochester Institute of Technology. More than one thousand students attend the National Technical Institute for the Deaf. About one hundred of them are international students.They come from Africa, Asia,Europe and South America. The cost is about 28,000 dollars a year for an international Technical Institute student.Foreign graduate students pay about 20,000 dollars.  Both undergraduate and graduate student can receive limited financial aid. They can also take part in the student employment program.This program makes it possible for students to work at the school. Robert Davila is the president who    _    . A) is well received there B) is hated by the students C) has high fame world-wide D) was appointed by the government
A

You maybe surprised to learn that one of the best steps you can take to protect your health is to step outside and spend some time in the grass, dirt and water.     Our ancestors enjoyed the healing power of nature , and now scientists are starting to catch up.According to research in recent years, just having a view of nature has been shown to improve hospital patients'  recovery and reduce illness rates among office workers.Also, exposure  to wildlife, horseback riding, hiking, camping and farms can be helpful for a variety of health conditions in adults and children.     Much of this type of research is focusing on children, and in fact an entire movement has quickly developed to connect kids with the healing power of nature.     Obesity  .Rates of childhood obesity have grown sharply in recent years, and this is partly because of reduced outdoor activity time.Increasing the time students spend learning about nature, both in and outside the classroom, would help solve this problem.Such lessons are often more attractive for students and often lead them to become more active outside.     Attention deficit hyperactivity disorder (ADHD)   .Exposure to ordinary natural settings   in the course of common after-school and weekend activities may be effective in reducing attention deficit symptoms in children.Participation in green activities --such as nature walks--helped ADHD patients from a wide range of backgrounds to stay focused and complete tasks.     Stress.Access to nature, even houseplants, can help children cope with stress.     Depression  and  seasonal  emotional  disorder.Major  depression requires medical treatment, but physical activity, especially outdoors, can help ease symptoms.For your average case of winter blues, experts suggest spending time outside every day and, if possible, taking the family to a sunny vacation spot in mid-winter.     Experts emphasize that you needn' t go to wilderness preserves to enjoy nature' s benefits--simply walking in a city park or growing in a rooftop garden can... According to Para.4, lessons about nature  _  . A) should engage parents in them B) should take place outdoors C) are used widely at schools D) are liked by students

D