简述品评场所位置的选择原则？

情景交际。

     根据对话情景和内容,从对话后所给的选项中选出能填入每一空白处的最佳选项,选项中有两

个为多余选项。

A: Any good news?

B: Not really.   1   So I was left behind after school yesterday.

A:   2    

B: Sometimes I do. The day before yesterday, I was quiet in my history class but I still had to stay after school.

A:   3   

B: Because I fell asleep. But it wasn't my fault.   4    

A: I advise you to take school more seriously. If you don't pass your exam, you will have to drop out and

    work as a result;

B:   5   If I have a job, I have to do dull work every day. But now I am in school, I must listen to dull teachers

    every day.

A: Something must be wrong with you. Go to the psychologist first.

A: You are lazy.

B: I don't understand.

C: You made your teacher angry.

D: Better keep quiet in class.

E: The lesson is dull.

F: I don't think it makes much difference.

G: I was talking without being asked in class.

从每小题A. B. C三个选项中，选择可以填入空白处的最佳答案

Do you need trust (信任) from others? Yes! Everyone needs,    1   his or her parents. Parents would like to give you    2   space if they trust you. If you want your parents to trust you, you have to show    3  through action.

Let your parents    4   what’s going on at school and something else. Keep your bedroom door open when you’re back. Don’t be mad when they see what you’re    5   on the Internet. Invite your friends    6   your house to meet your parents.

When you do   7   wrong, it can break trust. It’s easy to find some reasons not to tell your parents what you’ve done wrong. For example, you don’t want them to be    8   with you and …The list can go on and on. But if they find the    9 , you’ll be in hot water. Broken trust takes long time to recover (恢复),    10   you can do things gradually (逐渐地) to help your parents believe in you again.

小题1:A. really                 B. finally              C. especially

小题2:A. many                    B. more                     C. most

小题3:A. him                     B. her                  C. them

小题4:A. know                    B. to know              C. knowing

小题5:A. looking for                 B. looking through      C. going through

小题6:A. on                     B. to                   C. from

小题7:A. something               B. anything                 C. everything

小题8:A. happy                   B. angry                   C. pleased

小题9:A. truth                   B. reason               C. way

小题10:A. or                     B. and                  C. but

A、B、C三种短周期元素在元素周期表中的相对位置如图所示，已知A、C可分别与B形成化合物X和Y，A与B的质子数之和为C的质子数，现有以下说法，其中判断正确的组合是（ ）

①B与C均存在同素异形体；②X的种类比Y的多③沸点：A的氢化物小于C的氢化物；④C的最高价氧化物对应水化物能与A的氢化物形成三种盐

A．①②③④        B．②③       C．①②④       D．①④

属抗血小板聚集药的是

A．双嘧达莫

B．尼莫地平

C．维拉帕米

D．美托洛尔

E．硝酸甘油

单吸泵是指离心泵只有一个叶轮。