【单选题】That black jacket is indeed cheap and fine.

We hope that you will give us the opportunity to show you the fine work we do and the expertise of our qualified .

A、serviceman

B、servantman

C、servemen

D、servicemen

Adam Walden's best friend is his cello-and that's just fine with him. Like all children with autism and related disorders, the 8-year-old boy from Los Angeles has trouble interacting with others and forming relationships. Learning to speak has been an enormous challenge for him and, at an age when many kids are being scolded for chatting in class, Adam sometimes has problems even recognizing the human voice.

Once regarded with suspicion by his classmates, Adam rarely got invited to birthday parties and during those few occasions that he was asked, he was often found hiding under beds or running away down the street. But life took a positive turn for Adam once he was introduced to the cello. Recently admitted to the Colburn School of Performing Arts, Adam has learned to communicate with others through his music and performs regularly in recitals, where he hams it up and loves to be on stage.

After more than four years of intensive therapy and treatments, Adam has reached the point where most people who meet him would at first just think he's a little eccentric or different. But, as many experts point out, autism is not simply "quirkiness" or an unusual personality trait, but a serious disorder capable of destroying families and children's futures. Like others with the condition, Adam's progress has been bard-won.

His struggles are increasingly shared by many across the United States as rates of autism continue to skyrocket. Some experts estimate that as many as 1 in 166 children born today will be diagnosed with an autistic disorder. Autism is now the second most commonly diagnosed developmental disability in children after mental retardation.

While the causes for the dramatic rise in cases over the past decade are the subject of much debate, one thing is certain: early diagnosis is crucial. By being aware of key symptoms to watch for, parents can help spot the disorder and, if necessary, ensure their child begins treatment.

"One of the factors in a good [autism] prognosis is early intervention," says Dr. Sally Ozonoff, associate professor of psychiatry at the MIND Institute at the University of California, Davis. "It's been shown pretty clearly that starting an intervention at age 3 is better than 5, or starting intervention at 2 or potentially even earlier than that is better."

But while most experts agree that beginning treatment for autism at an early age is important, the process of diagnosing children can be fraught with difficulty and makes the goal of early treatment sometimes easier said than done.

According to the passage, children suffering from autism are unable to _______.

A．play musical instrument.

B．interact with other people.

C．recognize their parents.

D．be invited to birthday parties.

How much sleep does a person need?【31】the physiological bases of the need for sleep remain conjectural (猜想), rendering conclusive answers to this question impossible, much evidence has been gathered on how much sleep people do in fact obtain. Perhaps the most important conclusion to be【32】from this evidence is【33】there is great variability among individuals in total sleep time. For adults,【34】between six and nine hours of sleep as a nightly average is not unusual, and 7.5 hours probably best expresses the norm. Such norms, of course, forms inevitably vary with the criteria of sleep employed, The most【35】and reliable figures on sleep time, including those cited here, come from studies in sleep laboratories, where EEG criteria are employed.

【36】consistently has been associated with the varying amount, quality, and pattern of electrophysiologically defined sleep. The newborn infant may spend an average of about 16 hours of each 24-hour period in sleep,【37】the sleep time drops sharply; by two years of age, it may【38】from nine to 12 hours. Decreases to approximately six hours have been observed among the elderly.

【39】will be discussed from below, EEG sleep studies have indicated that sleep can be considered to consist of several different stages. Developmental changes in the relative proportion of sleep time【40】in these sleep stages are as striking as age-related changes in total sleep time.

(31)

A．As

B．Despite

C．While

D．Whether

How much sleep does a person need?【31】the physiological bases of the need for sleep remain conjectural (猜想), rendering conclusive answers to this question impossible, much evidence has been gathered on how much sleep people do in fact obtain. Perhaps the most important conclusion to be【32】from this evidence is【33】there is great variability among individuals in total sleep time. For adults,【34】between six and nine hours of sleep as a nightly average is not unusual, and 7.5 hours probably best expresses the norm. Such norms, of course, forms inevitably vary with the criteria of sleep employed. The most【35】and reliable figures on sleep time, including those cited here, come from studies in sleep laboratories, where EEG criteria are employed.

【36】consistently has been associated with the varying amount, quality, and pattern of electrophysiologically defined sleep. The newborn infant may spend an average of about 16 hours of each 24-hour period in sleep,【37】the sleep time drops sharply; by two years of age, it may【38】from nine to 12 hours. Decreases to approximately six hours have been observed among the elderly.

【39】will be discussed from below, EEG sleep studies have indicated that sleep can be considered to consist of several different stages. Developmental changes in the relative proportion of sleep time【40】in these sleep stages are as striking as age-related changes in total sleep time.

(31)

A．As

B．Despite

C．While

D．Whether