下列离子能在PH=12的水溶液中大量共存的是（ ） A．SO42-、NO3-、K

关于老年人呼吸功能的叙述，不正确的是（）。

A.胸壁僵硬、呼吸肌力变弱

B.胸-肺顺应性降低

C.闭合气量增加

D.肺弹性回缩力下降

E.肺泡表面活性物质增加

阅读理解。

     Steve Jobs made technology fun.The co-founder of Apple died last Wednesday at the age of fifty-six

He had fought for years against cancer.Mourners gathered outside his house in Palo Alto, California, and Apple stores around the world.

     Tim Bajarin, president of a high-tech research and consulting company, said "If you actually look at a

tech leader, they're really happy if they have one hit in their life.Steve Jobs has the Apple II, the Mac, the

iPod, the iPhone, the iPad and Pixar."

     Steve Jobs was a college dropout.He was adopted by a machinist and his wife, an accountant.They

supported his early interest in electronics.

     He and his friend Steve Wozniak started Apple Computer-now just called Apple-in nineteen

seventy-six.They stayed at the company until nineteen eighty-five.That year, Steve Wozniak returned to

college and Steve Jobs left in a dispute (分歧) with the chief executive.

     Mr.Jobs then formed his own company, called NeXT Computer.He rejoined Apple in nineteen

ninety-seven after it bought NeXT.He helped remake Apple from a business that was in bad shape then

to one of the most valuable companies in the world today.

     Steve Wozniak, speaking on CNN, remembered his longtime friend as a "great visionary and leader''

and a "marketing genius (天才)".

     President Obama said in a statement: "By building one of the planet's most successful companies from

his garage, he exemplified the spirit of American ingenuity.By making computers personal and putting the

Internet in our pockets, he made the information revolution not only accessible, but intuitive and fun."

     David Carroll is a professor at Parsons School of Design in New York City.He says Steve Jobs not

only revolutionized technology, he also revolutionized American business.

     "The fact that he was able to redesign American commerce lop to bottom and across is really stunning (令人惊奇的).He probably will be considered an industrial giant on the scale of Thomas Edison and

Henry Ford, so one of the great[s] of all time." David Carroll said.

      Steve Jobs stepped down as Apple's chief executive in August because of his health.He died a day

after the company released a new iPhone version that met with limited excitement.Apple's new chief,

Tim Cook, will also have to deal with the new Kindle Fire tablet computer from Amazon.com.It costs

less than half as much as an iPad but also does less.

1.Why did people all over the world mourn Steve Jobs?

A. He was very courageous in the face of cancer.

B. He became very rich though dropping out college.

C .He released a new iPhone version before death.

D. He revolutionized technology and made it enjoyable.

2.Which of the following can easily prove that Jobs is a "marketing genius"?

A. After Apple, he founded NeXT Computer.

B. He made Apple very valuable once again in the world.

C. He developed a series of Apple products.

D. He was considered the greatest industrial figure of all time.

3.What does the underlined part in Paragraph 7 mean?

A. Jobs was a typical example of American spirit of creation.

B. Jobs enriched the American spirit of science and freedom.

C. Jobs eventually realized his American dream.

D. American people are good at inventing things.

4.Which of the following is true according to the text?

A. Jobs's parents discouraged him from working on electronics

B. Jobs stayed in Apple as chief executive for about 24 years.

C. Jobs started his career in his family garage.

D. Run unsuccessfully, Apple was sold to NeXT Computer.

关于正常人暗适应的特点叙述正确的是（）。

A.最初2分钟光敏感度提高最快

B.5～8分钟时再次光敏感度快速提高

C.20分钟左右达到稳定高峰

D.5～8分钟时暗适应曲线上可见转折点

E.以上均正确

下列哪种镇痛药是目前所有镇痛药中镇痛作用最强的药物（）

A.吗啡

B.哌替啶

C.舒芬太尼

D.阿芬太尼

E.二氢埃托啡

水泥楼地面裂缝宽度较大是一个定性的概念，一般控制在（）mm。

A.0.1

B.0.2

C.0.3

D.0.5