患者CI1.8L/min/m2，PCWP28mmHg，SVR750mmHg/s·L最

已知方程2x+a=x﹣1的解为x=﹣4，（b﹣2）³﹣b³=1，c，d互为负倒数，m，n的绝对值相等且mn＜0，y为最大的负整数，则（y+b）^a+m（a﹣cd）+4nb²的值为（    ）。

阅读理解。

     Mobile phones are everywhere in big cities. It seems that no one can live without one. Mobile phones are

a great way to stay connected with friends and family. However, it is important to remember that there are

certain times when you should not be using your phone, especially in class or at a meeting.

     If you are in class or at a meeting, you should not be sending your friends text messages or taking phone

calls. Your classmates and teacher or the people around you will not like it and will think of it as a rude

behavior.

     In the United States, people would never be allowed to use their mobile phones during class or a meeting.

If you were to send or receive a text message, you would probably be kicked out. It is very disturbing to hear

a lot of tones and ringing when people are listening to a speech or studying. There are many more rules for the

use of mobile phones in America which are to show respect for those around you.

     It's easy to understand why it is so tempting (诱惑人的) to have your phone on during class or a meeting.

It seems so easy just to send a short text message; it's not hurting anyone, is it? But you may actually be

hurting yourself when you do this because the people you are with in class or at the meeting will think badly

of you and will have a bad impression on you. Sending a text message also takes your attention away from

what's going on. Even worse, you may miss something important.

1. The short passage is mainly talking about _____.[ ]

A. the importance of mobile phones

B. sending messages

C. the proper use of mobile phones

D. making phone calls

2. Which of the following statements is NOT true? [ ]

A. If an American student used his or her mobile phone in class, he or she would be probably to make to

     leave school.

B. It doesn't matter whether you send a text message or take phone calls in class.

C. Using a mobile phone in class has a lot to do with your respect for others around you.

D. Using a mobile phone in class will have a bad effect on your impression and understanding about the

     important points.

3. From the passage above, we know that _____. [ ]

A. people can't live without mobile phones

B. people will hurt themselves if not using mobile phones properly

C. mobile phones are always good to people

D. American people don't like to use mobile phones

下列（）情况下，建设单位可以委托其他单位保修，原施工单位承担相应责任。

A.施工单位不按工程质量保修书约定保修的

B.涉及结构安全缺陷，原施工单位不能及时到达现场的

C.建设单位自己有能力维修的

D.施工单位同意建设单位维修的

E.施工单位故意进场拖延维修日期的

2岁男孩，因反复咳嗽、喘息6个月入院。患儿间断出现咳嗽、喘息，夜间重，有时低热。查体：双肺听诊可及哮鸣音及粗细湿啰音，血常规：WBC7×10⁹/L，N48%，L50%。

为了明确诊断可选择的检查有（）。

A.胸部X线

B.PPD试验

C.纤维支气管镜检查

D.肺功能测定

E.下呼吸道分泌物普通培养

F.皮肤点刺试验

在营业厅销售场合发问主要划分为（）问句和（）问句两大类。