药品标准，食品卫生标准，兽药标准属强制性标准

阅读理解。

      Studies have shown that the fewer medicines a person has to take the more likely he or she will take

them. Last week, a study was released about a new treatment that combines 5 medicines for heart

disease in one pill. Salim Yusuf of McMaster University in Hamilton, Ontario, Canada was the lead

investigator. He presented the findings at the American College of Cardiology Conference in Orlando,

Florida.

     The experimental drug is known as Polycap. It contains aspirin, a drug to lower cholesterol (胆固醇)

and three medicines to lower blood pressure. The study was carried out at 50 health centers across India. More than two thousand people between the ages of 45 and 80 took part in the study. All had at least

one risk factor for heart disease. These include high blood pressure, high cholesterol, diabetes or being

severely overweight.

     The people were divided into 9 groups of about 200 people each. One group took Polycap. The

other groups took either a single drug or different combinations of the medicines in the Polycap pill. The

study showed that Polycap lowered blood pressure and cholesterol without many side effects. Doctor

Yusuf said the single pill, taken once a day, could reduce the average person's risk of heart disease and

stroke by about half. The maker of Polycap, Cadila Pharmaceuticals of India, paid for the study.

     Cardiovascular diseases (心血管疾病) of the heart and blood vessels are the number one cause of

death around the world. These diseases kill more than seventeen million people every year. 80 percent

of them are in low and middle income countries. Doctor Yusuf said the single pill treatment could

revolutionize heart disease prevention. People would be more likely to take one pill a day than many

pills. And one pill would cost less than several pills.

     Other heart doctors say heart disease prevention is important but not necessarily with pills. They say

patients might be able to get the same results with changes in diet and exercise.

     Doctors say that more research on Polycap is needed. They say the drug should be tested on thousands more people, including those in different risk, age and ethnic groups.

1. The underlined sentence in Paragraph 1 implies that people        .

A. don' t like to take medicines

B. tend to take fewer medicines

C. should take medicines if it is necessary

D. tend to fall sick if they take fewer medicines

2. Which of the following about Doctor Ysisuf's experiment on Polycap in India is True?

A. Polycap was tested for its five different combinations.

B. Polycap was proved basically safe and effective.

C. All the participators had at least one symptom of heart disease.

D. Participators were required to come from different ages and ethnic groups,

3. From the passage, we can infer that Polycap_       .

A. is generally accepted by heart doctors

B. mainly consists of medicines to lower blood pressure

C. is certain to play important role in heart disease prevention

D. will be cheaper than other common medicines to treat heart disease

4. According to the passage, the following people are more likely to get Cardiovascular

   disease except         .

A. old people    

B. low - income people    

C. overweight people    

D. diabetic people

5. What would be the best title for the passage?

A. Different opinions about heart disease prevention.

B. A combination pill may cut heart disease risk in half.

C. A combination pill cures blood pressure and bad cholesterol.

D. Cardiovascular diseases are the number one killer in the world.

患者女性，36岁，间断反复发热2个月，既往有风湿性心脏病史5年，查体：胸骨左缘第4肋间闻及乐音样杂音，心尖部闻及全收缩期吹风样高调一贯性杂音，向左腋下传导

应考虑的诊断是（）

A.二尖瓣关闭不全合并二尖瓣脱垂

B.二尖瓣狭窄合并腱索断裂

C.二尖瓣关闭不全合并主动脉瓣关闭不全

D.二尖瓣狭窄合并感染性心内膜炎

E.二尖瓣关闭不全合并感染性心内膜炎

公路养护车辆进行作业时，在不影响过往车辆通行的前提下，其行驶路线和方向（）

A、不受公路标志、标线限制

B、受公路标志、标线限制

若a＞0，b＜0，则函数y=ax²+bx的图像是（）。

A.A

B.B

C.C

D.D

E.E

强制效蒸发器的加热蒸汽是利用V1效蒸发器的二次汽。