问题 单项选择题

对药物与受体的亲和力的正确说法是:

A.亲和力指数KD与用药剂量无关
B.KD与pD2的关系为KD=log pD2
C.亲和力指药物与受体结合的能力
D.KD不用摩尔单位
E.用pD2表示亲和力时用摩尔单位

答案

参考答案:C

阅读理解

阅读表达 阅读短文, 按要求完成短文后的各项任务。

In most parts of the world, many students help their schools make less pollution(污染). They join “environment(环境) clubs ”. (1)In an environment club, people work together to make our environment clean. Here are some things students often do.

No garbage(垃圾) lunches. How much do you throw away after lunch? Environment clubs ask students to bring their lunches in bags and the bags can be used again. If the classes make the least garbage, we will report them to the whole school!

No car day. On a no car day, nobody comes to school in a car-----not the students and not the teachers! Cars give pollution to our air, so remember: Walk, jump, bike or run. Use your legs! It's lots of fun!

Turn off the water! Did you know that some toilets(厕所) can waste(浪费) 20 to 40 m3 of water an hour? In a year, that would fill a small river! In environment clubs, students mend(修理) those broken toilets.

We love our environment. (2)Everyone should take _______ to make our environment ______. Let's work together.

小题1:将(1)句译成汉语。                                                    

小题2:在(2)句的空白处分别一个适当的词使句意完整、上下文通顺。

   __      _       _

小题3:How many things can we do to protect the environment in the passage?

                                                                              

小题4:在文中找出与If it is a no car day, no one will drive a car to school.意思相近的句子。

                                                                              

小题5:在文中找出最能表达该短文主题的句子。

                                                                            

问答题 简答题