and medical records from a truck. They are creating a makeshift(临时的) clinic on the street.

The first stage is triage, assessing the needs of poor and homeless at this once-a-week mobile clinic. It is run by students from the University of California, Los Angeles, who operate similar clinics in different communities on other nights. They provide medicine and offer clean socks and reading glasses to those who need them. They bandage injuries and monitor vital signs.

Another charity offers nutritious meals to the patients. Students in social work and law also come to offer assistance, getting long-term help from the government or private agencies for those people who qualify.

Physician Walter Coppenrath helped start this street clinic 12 years ago when he was a medical student. He now teaches at UCLA and sees patients at a nearby medical center.

　　"The care is given to those who do not get help in other places," says medical student Steffanie Becerra. "They see us as their only point of care within the medical system where they can get their medications. A lot of people with hypertension or diabetes really have no other choice but to come here because they just cannot afford the medications elsewhere," she explains.

　　The mobile clinic helps both patients and students, says undergraduate Kevin Norris, who plans to become a doctor. "We really treat them as individuals deserving of respect because so many of the homeless people here in Los Angeles are really just looked down on and largely ignored by much of the population," Norris states. He says that once a week these people get the attention and the care they deserve, and the voluntary work helps him understand his future role as a physician.

25.The once-a-week mobile clinic can provide the patients with following articles EXCEPT ________.

A. clean socks B. medicine C. reading glasses D. nutritious meals

26. According to the passage, we can learn that .

　A. the idea of creating a makeshift clinic started in 1990

　B. the once-a-week mobile clinic only opens in the daytime

C. most of the people receiving the service are very poor

　D. Walter Coppenrath's occupation is only a teacher at present

27. The author writes the last paragraph in order to tell us .

A. everyone should be treated with equal respect

B. Kevin Norris is unsatisfied with the current medical system

　C. Kevin Norris is happy to help the homeless people in Los Angeles

　D. the experience helps both patients and students

28. The best title of the passage is .

A. Students' Mobile Clinic Helps Homeless B. How to Run a Mobile Clinic in Los Angeles

C. Volunteer Work Benefits the Old People D. The Health Care System in Los Angeles

Eating too much fatty food, exercising too little and smoking can raise your future risk of heart disease. But there is another factor that can cause your heart problems more immediately: the air you breathe.

Previous studies have linked high exposure (暴露）to environmental pollution to an increased risk of heart problems, but two analyses now show that poor air quality can lead to heart attack or