问题 单项选择题 A1型题

以下关于放射性药物的描述,不正确的是()。

A.放射性药物是临床核医学发展的重要基石

B.放射性药物是由放射性核素本身及其标记化合物组成

C.放射性核素显像和治疗时利用核射线可被探测及其辐射作用,同时利用被标记化合物的生物学性能决定其在体内分布而达到靶向作用,能选择性积聚在病变组织

D.放射性药物主要分为诊断用放射性药物和治疗用放射性药物

E.放射性药物是一类普通药物,可常规应用

答案

参考答案:E

阅读理解

Think of London and you will probably remember the bright red double decker buses. Think of Thailand’s capital city, Bangkok, and the noisy tuk-tuks may come to mind. Think of San Francisco and you might see the city’s cable cars .

Imagining what these cities would look like without those is difficult. They are symbols of these cities that make them different. However, these city symbols are not always so well loved by their city leaders. City leaders want what is best for their city, which often means the most modern transport.

In Bangkok, city leaders have banned (禁止) tuk-tuks because they consider them noisy and polluting. However, the ban has largely been unsuccessful as it has not changed Thai people’s love for the cheap tuk-tuks over taxis.

In London the city’s first ever mayor (市长) removed the red double decker buses, which he thought were old fashioned. His plan worked, but Londoners were unhappy to lose the nice old buses they believed represented the best of their city. They made their unhappiness felt when the mayor came up for re-election. Most Londoners voted for his competitor, who promised to bring the bus back.

As for San Francisco, several cable cars are still in use but mainly as tourist attractions. They are too slow to be used for anything other than scenic trips.

City transport symbols may have a place in their city people’s hearts, but it seems they are increasingly out of step with the modern world. As Londoners have proved, their continued life depends on people’s willingness to fight for their survival.

64.What’s the purpose of writing the first paragraph?   

A. To introduce some city transport symbols.    

B. To explain why some cities are popular.

C. To talk about modern transport in some cities.    

D. To attract more tourists to visit some cities.

65.The London double decker bus is returning mainly because__________.

A. the new mayor loves it                 

B. Londoners fought for it

C. it is an improved transport         

D. it is popular with tourists

66.Which proves the old city transport symbols are not loved by city leaders?

A. Only a few cable cars are still in use in San Francisco.

B. Bangkok city leaders tried to remove the cheap tuk-tuks.

C. The mayor who sold double decker buses lost the re-election.

D. The new mayor will bring back improved double decker buses.

67.What can we infer from the passage?

A. Modern cities should remove old city transport symbols.

B. The writer thinks highly of the old city transport symbols.

C. Old city transport symbols face the problem of survival.

D. Tourist cities will lose their attraction without the symbols.

问答题 简答题