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【单选题】

In the absence of optimism, we are left with nothing but critics, naysayers, and prophets of doom.When a nation expects the worst from its people and institutions, and its experts focus exclusively on faults, hope dies.Too many people spend too much tie looking down rather than up, finding fault with their country's political institutions, economic system, edncational establishment, religious organizations, and—worst of all—with each other.
Faultfinding expends so much negative energy that nothing is left over for positive action.It takes courage and strength to solve the genuine problems that afflict every society.Sure, there well always be things that need fixing.But the question is, Do you want to spend your time and energy tearing things down or building them up?
The staging of a Broadway show could illustrate my point.Let's say a new production is about to open.A playwright has polished the script, investor have put up the money, and the theater ahs been rented.A director alas been chosen, actors have been auditioned and selected, and the cast has been rehearsing for weeks.Set, lighting, and sound engineers have been hard at work.By the time opening night arrives, nearly a hundred people have labored tirelessly—all working long hours to make magic for their audience.
On opening night, four or five critics sit in the audience.If they pan it, the play will probably close in a matter lf days or weeks.If they praise it, the production could go on for a long and successful run.In the end, success or failure might hinge on the opinion of a single person—someone who might be in a bad mood on opening night! What's wrong with this scene? In one sense, nothing.Critics have a legitimate role.The problem arises when we make critics our heroes or put them in control of our fate.When we empower the critic more than the playwright, something is wrong.It is much easier to criticize than to create.When we revere the critics of society, we ually become a society of critics, and when that happens, there is no mom left for constructive optimism.
According to the author, critics usually ______.

A.
ignore minor imperfections
B.
overemphasize flaws
C.
see both sides of a coin
D.
pin their hopes on improvements
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【单选题】【C12】

A.
decisive
B.
determinant
C.
essential
D.
crucial

【多选题】下列( )为建筑安装工程费中的税费。

A.
增值税
B.
城市维护建设税
C.
教育附加税
D.
营业税

【单选题】下列关于光纤同轴电缆混合网HFC的描述中,错误的是

A.
HFC是一个双向传输系统
B.
Cable Modem利用频分多路复用方法将信道分为上行信道与下行信道
C.
Cable Modem传输方式分为对称式和非对称式两类
D.
HFC通过Cable Modem将光缆与同轴电缆连接起来

【单选题】根据《软件文档管理指南GB/T 16680-1996》,软件文档包括(9)等。

A.
启动文档、计划文档、实施文档和收尾文档
B.
开发文档、支持文档和管理文档
C.
开发文档、产品文档和管理文档
D.
开发文档、技术文档和管理文档

【单选题】What is the main idea of this passage?

A.
Obesity is now a global problem that needs tackling.
B.
The weights increase fast throughout the whole world.
C.
Obesity and starvation are two main problems in the poor world.
D.
Obesity has shifted front the rich world to the poor world.