[简答题]The prospects of a cure for lung cancer are, at present, remote, and it is impossi-ble to estimate when, if ever, someone will find one.

[简答题]The prospects of a cure for lung cancer are, at present, remote, and it is impossible to estimate when, if ever, .someone will find one.

[简答题]The prospects of a cure for lung cancer are，at present，remote，and it is impossible to estimate when，if ever，someone will find one．

[单项选择]If national health insurance would not cure the problems of the American healthcare system, what, then, is responsible for them Suspicion falls heavily on hospitals, which make up the largest component of the system. In 1988 hospitals accounted for 39% of all health expenditures-more than doctor, nursing homes, drugs, and home health care combined.
Although U. S. hospitals provide outstanding research and frequently excellent care, they also exhibit the classic attributes of insufficient organizations: increasing costs and decreasing use. The average cost of a hospital stay in 1987—＄3,850—was more than double the 1980 cost. A careful government analysis published in 1987 revealed the inflation of hospital costs, over and above general price inflation, as a major factor in their growth, even after allowances were made for increases in the population and in intensity of care. While the rate of increase for hospital costs was 2796 greater than that for all medical care and 163% great
A. is working smoothly
B. is the best system in the world
C. is not working efficiently
D. in on the point of collapses

[填空题]
1. The death rate due to cancer of the lungs has increased more than 800 percent in males and has more than doubled in females during the last 25 years. It is considerably higher in urban and industrial areas than in rural districts. There are many possible causes, but it is still controversial which are most blameworthy. Those factors which have been mentioned most frequently are the presence of foreign particles and other irritants in the air (smoke particles, smog, exhaust fumes), and the smoking of cigarettes and cigars.
2. Numerous studies have demonstrated a striking correlation between the death rate from lung cancer and smoking habits. Among heavy smokers — 21 to 30 cigarettes per day — the mortality rate from lung cancer is nearly 17 times the rate from nonsmokers. It is expected the death rate among women will increase as the present high rate of smoking among women has its effect.
3. Sometimes cases

[单项选择] Using HIV Virus to Cure Cancer Scientists are planning to use human immunodeficiency(免疫缺陷)virus(HIV), one of mankind’s most feared viruses, as a carrier of genes which can fight cancer and a range of diseases that cannot be cured. The experts say HIV has an almost perfect ability to avoid the body’s immune(免疫的)defenses, making it ideal for carrying replacement genes into patients’ bodies, according to the Observer. A team at the California-based Salk Institute, one of the world’s leading research centers on biological sciences, has created a special new breed of HIV and has started negotiations with the U>S> Food and Drug Administration(FDA)to begin clinical gene therapy(治疗) trials this year. The first trials are expected to involve patients suffering from cancers that cannot be cured by surgery although project leader Professor Inder Verma said the HIV technique would have” far wider applications”. The plan remains very likely to cause controversy since it involves m
A. Right
B. Wrong
C. Not mentioned