十一届全国人大四次会议2011年3月10日上午在人民大会堂举行第二次全体会议，吴邦国

利用课余时间在同学们中开展“寻找共同的生活情趣”“情趣展示会”活动；利用情趣表演、击鼓传花、讨论交流、自我小结等方式，每位同学展示一件最能体现自己情趣的作品，可以是一幅字画，一件小制作，一首歌曲，一段舞蹈，一首小诗，一本集邮册……通过多种方式的展示、交流，体会培养高雅情趣的乐趣和意义。了解班级中其他同学的情趣，了解具有共同情趣的人，从而加强对兴趣、情趣等知识学习的兴趣；进一步感受培养高雅情趣对个人品格修养的重要作用，从而激发自己在日常生活中培养高雅情趣的积极性，自觉陶冶高雅的生活情趣。

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利多卡因的安全浓度和一次限量是（）。

A．O．5％～1％，lg

B．0．25％～O．75％，150mg

C．O．5％～1％，40～60mg

D．0．25％～O．75％，40～60mg

E．1％～2％，400mg

坚持科学规划，突出（）的方针，从源头防治污染和生态破坏。

A.综合治理

B.达标排放

C.预防为主

D.总量控制

阅读理解。

     Few of us make money by losing sleep. But three graduate students at Brown University in Providence

built a company around sleep deprivation (睡眠不足).

     Jason Donahue, Ben Rubin and Eric Shashoua were working late nights in Brown's business and

engineering schools. They began thinking about ways to sleep better. They discovered they weren't alone in

burning the midnight oil. Around 20% of Americans get less than six hours of rest a night.

     The friends imagined a smart alarm clock that could track how much time people spend in the most

restorative (有回复作用的) stages of the sleep cycle: REM (rapid eye movement)and deep sleep. What would

it cost to design such a thing? Five years of research, 20 employees, $14 million and a whole lot of doubting

from investors and scientists.

     Their company, Zeo, based in Newton, Mass, launched its product in June, 2009. The Zeo device uses a

headband with tiny sensors (传感器) that scan your brain for signs of four sleep states-REM, light, deep and

waking sleep.The smart alarm clock displays a graph of your sleep pattern and wakes you as you're not in

REM sleep (which is when you're least groggy). In the morning you can upload the data to the company's

Web site, and so track your sleep over time.Most of the feedback comes in the form of Zeo's ZQ score

showing how well you've slept.

     "Zeo allows people to unlock this black box of sleep," says Dave Dickinson, a health-care CEO.

     Whether any of this actually improves sleep is up to the consumer, who will also need to make lifestyle

changes like cutting out alcohol before bedtime or caffeine after 3 pm.

     For now the company is selling Zeo online only. Dickinson also plans to spread it to countries such as

Australia, where sleep deprivation approaches US level

1. Who will support Zeo? 

A. People full of imagination.

B. People suffering sleeping problems.

C. People having access to the Internet.

D. People having bad lifestyles.

2. Why did the three graduate students imagine a smart alarm clock?

A. To wake them up on time in the morning.

B. To earn enough money for their study.

C. To improve the quality of people's sleep.

D. To enjoy their life while working at night.

3. To design the Zeo device, the three graduate students ____.

A. spent much time and money

B. were widely supported by scientists

C. worked by themselves all the time

D. attracted many investors .

4. What can we know from the passage?

A. Zeo has a direct effect on users' lifestyles.

B. It needs more personal efforts to make Zeo function better.

C. A large quantity of Zeo devices have been sold in Australia.

D. Consumers can go to the Zeo company to purchase Zeo in person

机油直接贮存在柴油机油底壳内，称为（）系统。

A.干式循环

B.低速循环

C.热式循环

D.湿式循环