题目内容
Chairman Hu will attend an (非正式的) meeting .
informal
期末100分闯关海淀考王系列答案
小学能力测试卷系列答案Attention deficit（不足）hyperactivity（活动过度）disorder is known by the letters A．D．H D．Children with A．D．H．D．might have trouble paying attention．They might not seem to listen and might forget things．They might not be able to stay seated or play quietly．They might talk too much and act and speak without thinking about the results of their behavior．These are among the signs named on the web site of America’s Centers for Disease Control and Prevention．
Doctors usually identify the disorder in children．But experts say the behaviors often last into adulthood．Researchers have been looking for the cause or causes of attention deficit hyperactivity disorder．Now, a brain-imaging study offers more evidence that could lead to new ways to treat it．Researchers say they observed shortages in the brain's reward system in patients with A．D．H．D．The study found that levels of some proteins were lower than normal．Nora Volkow, director of the National Institute on Drug Abuse, says the lack of attention and self –control that mark A.B.H.D. could be caused by problem in the flow of dopamine（多巴胺）. She says people might have difficulty completing an activity if they cannot expect some kind of reward in return. Researchers studied the pathways on which dopamine travels and A.D.H.D. Doctor Volkow says the researchers then compared the pathways to those of 44 adults without the disorder. “There was a lower concentration of dopamine markers in the brain of individuals with A.D.H.D., specifically in the areas of the brain that are involved with reward and motivation. And the dopamine levels were directly linked to the severity, of the patient’s inattention she says.”
The study used brain images taken at Brookhaven National Laboratory in new York State. Gene-Jack Wang is chairman of the Brookdhaven medical department. He says the finding might also help explain why people with A.D.H.D.
are more likely to abuse drugs or overeat. He says they might be attempting to increase their dopamine levels to make up for the deficits in their reward system.
| Title | ●The finding of |
| The of Children with A.D.H.D. | ●They are lacking in . ●Perhaps they don’t seem to listen. ●Perhaps they are . ●Perhaps they can’t sit for or play quietly. ●They might talk too much and act and speak without the results of their behavior |
| The of A.D.H.D. | ●patients with A.D.H.D are of the brain’s reward. ●Levels of some proteins are lower than normal. ●Levels of dopamine are as well. |
| Reasons of abusing Drugs | ●They are trying to their dopamine. |
A. His early career
B. His return and Apple's growth
C. His moving back and its effect
D. His memory living on forever
E. Struggling hard for his career
F. Public recognition （承认）of his work
Steve Paul Jobs was an American businessman and widely recognized as a pioneer of the personal computer revolution（革命）. He was co-founder, chairman, and CEO of Apple Company. His death is a great loss to us. The following is some more information about him.
1.
After Apple's founding, Steve Jobs became a symbol of his company and industry. At the time of his resignation, and again after his death, he was widely described as a pioneer and genius perhaps one of the foremost in the field of business, creation and product design, and a man who had changed the face of the modern world, completely changed at least six different industries. His death was considered a loss to the world by commentators(评论家) across the globe.
2.
Memorial candles and iPads to Steve Jobs lie outside the Apple Store in Palo Alto, California. Apple has lost a creative genius, and the world has lost an amazing human being. Those who have been fortunate enough to know and work with Steve Jobs have lost a dear friend and an inspiring guide. Steve jobs leaves behind a company that only he could have built, and his spirit will forever be the foundation of Apple.
3.
As is still clearly remembered, it was not long before Steve Jobs left his office as CEO of Apple. But he remained at the company as chairman of the company's board. Hours after the announcement, Apple shares dropped by five percent in after-hour trading. The relatively small drop, when considering the importance of Steve Jobs to Apple, was associated with the fact that his health had been in the news for several years, and he was on medical leave since January 2011.
4.
Steve Jobs took a job as a technician at Atari company in California in 1974. He traveled to India in the summer of 1974. Seven months later, he returned to Atari and was assigned to create a circuit board for the game Breakout. With Wozniak, the founder of Atari, Steve Jobs began attending meetings of the Homebrew Computer Club where he got to know Edwin H. Land, the inventor of instant photography and founder of Polaroid Corporation, and modeled his career after him.
5.
Apple announced that it would buy NeXT for $429 million. The deal was finally made in late 1996, bringing Steve Jobs back to the company he co-founded. In order to concentrate Apple's efforts, Steve Jobs stopped a number of projects. With the purchase of NeXT, much of the company's technology found its way into Apple products. Under his guidance the company increased sales significantly with the introduction of the iMac and other new products. Since then, appealing designs and powerful branding have worked well for Apple.