空间有一沿x轴对称分布的电场，其电场强度E随x变化的图象如图所示，下列说法中正确

小东，男，22岁，初中肄业。小东没有工作，也没有找工作的意识，整日和一群小青年在外面游荡，经常惹是生非，很想上网打游戏，但由于家中贫困，只是偶尔过把瘾。小东的父亲、叔叔文化都很低，没有正式工作，且都有吸毒史。母亲已离家出走多年，很少来看望小东。小东现在和奶奶、父亲、叔叔同住在一间15平米不到的平房里，一家人靠奶奶微薄的退休工资和政府补助的低保生活。小东比较听奶奶的话，但受不了邻居的嘲笑和周围人的歧视。

[问题]

武昌起义成功的最主要的原因是[ ]

A．清朝湖北当局无力抵抗

B．革命党人计划周密完善

C．起义新军的革命主动精神

D．袁世凯尚未掌握政府实权

阅读理解。

     More than one in ten UK teenagers has been left without a job or college place, despite 11 years of

compulsory education, figures show.

     The number of 16-t0 18-year-olds branded as "Neet"-not in education, employment or training-has

risen amid growing fears that school-leavers are bearing the brunt of job shortages in the recession.

     Some 261,000 young people had no job or training place, according to official data. The figure rose

to 1,082,000 among 16-to 24-year-olds.

     The Conservatives branded the figure "shocking".

     David Willetts, the shadow skills secretary, said:"It is a damning indictment of the Government's

failure to help young people during the recession." 

     "Despite all Cordon Brown's guarantees and pledges, the number of young people neither earning nor

learning is increasing at a rate of more than 9,000 a week. Ministers must stop making empty gestures

that do so little to help young people."

     The Government has a target to reduce the proportion of young Neets to 7.6 per cent by next year.

     The latest annual data from the Department for Children, Schools and Families put the figure at 10.3

per cent by the end of 2008.

     The percentage of 16-t0 18-year-olds who fall into the same bracket remained higher in the past year

than in the previous 12 months, it was revealed.

     "In a further disclosure, figures for the third quarter of this year show almost a fifth of 16 to 24-year-

olds were in the category-more than at any point since 2005.

     Iain Wright, the Schools Minister, said:"We are giving all l6 and 17-year-olds the opportunity to stay

in education or training so they can gain the skills they need to succeed in an increasingly competitive

labour market."

     "We must not repeat the mistakes that were made in recessions of the past and abandon a whole

generation of young people. We recognize that we need to carry on helping young people through this

tough economic climate."

     He said the Government would offer every Neet 16 and 17-year-old a place on an "Entry to Employment"

course in January.

1. According to what David Willetts said, the number of young people neither earning or learning will increase

    ____ in a year.

A. 261,000

B. 1,082,000

C. 9,000

D. 432,000

2. The author develops the passage mainly by ____.

A. providing typical examples

B. telling an interesting story

C. comparing opinions from different fields

D. presenting a problem and possible solutions

3. What David Willetts said indicates that ____.

A. the government has tried its best to solve the problem

B. the problem is unavoidable during the recession

C. what the government has done is far from satisfactory

D. he is sure the government can solve the problem

4. Which of the following is NOT true according to Iain Wright?

A. The government has realized how serious the problem is and will take effective measures.

B. Young people are facing a tough economic climate.

C. The government responded too late in face of the situation.

D. It will be difficult for young people to be employed if they don't have relevant skills.

2008年，在国际金融危机冲击国际汽车工业的大背景下，德国大众汽车集团销售630万辆汽车，销售额1138亿欧元，盈利47亿欧元，创历史最好水平。年会上，出现最多的词汇是“品牌”，是对大众9个品牌——大众、奥迪、兰博基尼、宾利等的关注，大众之大源于品牌，大众之强源于品牌，大众之众源于品牌，大众实施品牌战略作为自身的核心竞争力。

要求：

简述核心竞争力的辨别方法；

石英管式液位计适用于介质PH（）的液体

A、＞3

B、≥5

C、＜10

D、≤9