问题 阅读理解

阅读理解.

     Technology has utterly transformed our ability to communicate with each other. Linking

to each other both literally and figuratively, many of us connect through cell phones, email,

instant messaging, blogs, and networking web sites, yet we may be less connected to each

other than we think.

     According to a study, Americans are becoming increasingly socially isolated. The study

reveals, for example, that one quarter of Americans say that they have no one to discuss

important personal issues with, and that the number of close friends that American have has

dropped from three to two. Meanwhile, the Boston Globe reports that this spreading

isolation is experienced more sharply among those with less education, people of color,

and older Americans. Unsurprisingly, those who are young, white, and well educated tend

to have stronger social networks.

     From my own experience I have to say that I've never felt more connected, thanks to

a web of friends, family, and colleagues. One of my closest friends is someone I met

through an online discussion group who lives hundreds of miles away from me. We have

met face-to-face only twice, yet our regular electronic correspondence and cell phone

calls maintain our close friendship. And, speaking of blogging, my blog has introduced me

to people I would never have met otherwise and has led to enduring and important

friendships.

     On the other hand, I recently saw a scene unfold that proved to me how deeply

disconnected we as Americans have become. I had just wrapped up a presentation on

mediation at a family therapy (治疗) center.

     As I was leaving, I noticed a mother and her teenage son who had just completed

their session with their family therapist (临床医学家). After making their next

appointment, they both took out their cell phones, placed calls, and began loud

conversations with whoever was on the other end. I walked out behind them to the

parking lot to my car. They both jumped into their SUV, and, as I saw them drive off,

they were still talking on their cell phones.

     But, alas, not to each other.

1. What does the passage lead you to believe?

A. Americans are more socially connected today.

B. Americans are more socially isolated today.

C. Technology plays a bigger role in American society.

D. Americans don't make good use of technology.

2. Which of the following has nothing to do with the isolation among Americans?

A. Age.

B. Education.

C. Skin color.

D. Sex.

3. What is true about the mother and son in the passage?

A. They came for therapy in the same car.

B. They were quite close to each other.

C. There was not much communication between them.

D. They preferred talking to each other on cell phones.

4. The author probably feels ______ with the mother and son.

A. puzzled

B. disappointed

C. amused

D. surprised

答案

1-4BDCD

问答题

[说明]
某汽车维修站拟开发一套小型汽车维修管理系统,对车辆的维修情况进行管理。
1.对于新客户及车辆,汽车维修管理系统首先登记客户信息,包括:客户编号、客户名称、客户性质(个人、单位)、折扣率、联系人、联系电话等信息;还要记录客户的车辆信息,包括:车牌号、车型、颜色、车辆类别等信息。一个客户至少有一台车。客户及车辆信息如表1所示。
表1


2.记录维修车辆的故障信息。包括:维修类型(普通、加急)、作业分类(大、中、小修)、结算方式(自付、三包、索赔)等信息。维修厂的员工分为:维修员和业务员。车辆维修首先委托给业务员。业务员对车辆进行检查和故障分析后,与客户磋商,确定故障现象,生成维修委托书。如表2所示。
3.维修车间根据维修委托书和车辆的故障现象,在已有的维修项目中选择并确定一个或多个具体维修项目,安排相关的维修工及工时,生成维修派工单。维修派工单如表3所示。
4.客户车辆在车间修理完毕后,根据维修项目单价和维修派工单中的工时计算车辆此次维修的总费用,记录在委托书中。
根据需求阶段收集的信息,设计的实体联系图(见图1)和关系模式(不完整)如下所示。图2-1中业务员和维修工是员工的子实体。
表1


表2


[概念结构设计-图1]


[逻辑结构设计]
客户( (5) ,折扣率,联系人,联系电话)
车辆(车牌号,客户编号,车型,颜色,车辆类别)
委托书( (6) ,维修类型,作业分类,结算方式,进厂时间,预计完工时间,登记日期,故障描述,总费用)
维修项目(维修项目编号,维修项目,单价)
派工单( (7) ,工时)
员工( (8) ,工种,员工类型,级别)

1中的联系并指明其联系类型。联系名可为:联系1,联系2,……。

多项选择题