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A．脂水分配系数与毒效应B．分离度与毒效应C．挥发度和蒸气压与毒效应D．分散度与毒效应E．纯度与毒效应 有机酸的pKa＜3，或有机碱的pKa＞8时不易吸收（）
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围绕给定资料主旨，就其所反映的主要问题，自选角度，自拟题目，写一篇议论文。 要求：(1)中心明确，内容充实，论证深刻，有说服力；(2)字数1000-1200字。
A．细菌总数 B．总大肠菌群C．粪大肠菌群 D．粪链球菌群E．肠球菌总数 44.5℃能生长繁殖发酵乳糖而产酸的菌群的是（）
A sick or injured person can obtain medical care in several different places. These include provider practices such as medical offices and clinics, hospitals and nursing homes.There are about 200,000 medical offices, clinics, and other provider practices in the United States. Earlier in the 20th century most physicians were single people working in their own offices or in partnership with another doctor. Patients visited the office, received an examination or other service, and paid a fee. This traditional fee-for-service medicine has been declining. Many physicians now practice in groups where they share the same offices and equipment with other doctors. Group practices may combine primary care physicians, several kinds of specialists, laboratories, and equipment for diagnosing disease. Physicians who practice in a group reduce their own expenses and provide patients with a wider range of services.Many doctors are joining with hospitals, insurance companies, and industrial employers to provide managed care for groups of patients. These plans manage to avoid unnecessary services and reduce costs. Rather than taking a fee from each patient, managed care physicians may receive an annual salary from a fixed sum for each patient.Patients who are too sick for care in a doctor’s office go to a hospital. Hospitals offer Patients 24-hour care from a staff of health professionals. They provide services not available elsewhere, such as major surgery, child birth, and intensive care for the critically ill. Hospital care is the most expensive form of health care. Efforts to control health care costs have emphasized reducing the number of patients admitted to hospitals and their length of stay. During the 1980s and 1990s, these efforts led to the closing of more than 600 hospitals.Patients who need long-term medical care because of advanced age or chronic illness may stay in a nursing home. The United States has about 23,000 nursing homes with about 1.3 million patients. According to the passage, the followings are the methods to reduce the costs EXCEPT（）
[听力原文]11-15Venice is a fascinating city between sea and sky. It is built on 117 islands. There aren’t any cars and buses, But it has 150 canals and 400 bridges. The narrow streets, with their historic names, are paved with stones but have no footpaths. They are lined with flower, shops and lights side by side. The squares are charming, The brick bridges are built high to; allow boats to pass tinder them.Every year thousands of tourists front the five continents visit this city. They are always amazed at the charm of her water and beautiful lights, which can make them free from all dust and cooled by the sea breezes.But because the level of the surrounding waters is constantly rising, the Venice faces a threat to its Very existence. And the Venetian love their city and want to stay there to save the Venice from the sea, Now various methods hove already been taken and a plan to protect the city is under investigation. Every year where do thousands of tourists come from to visit this city
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