在进行临床疗效评估中错误的是A.让受试者了解B.临床疗效评估具有实用性C.临床

A、tend to have growth rates that are higher than that of the United States

B、tend to have growth rates that are about the same as that of the United States

C、tend to have growth rates that are lower than that of the United States

D、in some cases have growth rates that are higher than that of the United States and in other cases lower than that of the United States

Section C

Today there are about 7, 000, 000 Americans in colleges and universities. In the United States【11】______half of population are young persons under twenty-five. Many of them will soon be【12】______the country. So their ideas are important to everyone in the country, and it is necessary for older people to understand what young people think and【13】______College students today have strong【14】______about right and wrong. They are interested in making a better life. They see much that is wrong in the lives of their parents. It is hard for them to see what is right and good in the older ways. Because of this, there is often trouble in American【15】______.

【11】

A．nearly

B．near

C．hardly

D．hard

A．3,500

B．2,000

C．3,000

D．6,000

______ of all businesses in the United States are small.

A．225,000

B．50%

C．95%

D．450,000

A、bills that extended the life of the Freedmen’s Bureau

B、assisting refugees

C、free slaves

D、All persons born in the United States were to enjoy equality.

How many states in the United States have banned smoking in restaurants？

A．12.

B．13.

C．14.

D．15.

What's the population of the United States according to the passage？

A．7,000,000.

B．14,000,000.

C．Twice of the young persons under twenty-five.

D．Not mentioned.

A、Here it is.

B、On business.

C、I plan to stay for about 10 days.

D、I have 800 dollars.

How many states in the United States have banned smoking in restaurants？

A．12.

B．13.

C．14.

D．15.