未知题型 关于建筑工程产品生产的特点，下列说法正确的是( )。

单项选择题 根据下列文章,请回答 46～50 题。 Read With Greater Speed Do you have difficulty reading in class? If S0，a special reading program that helps match sounds with letters could speed up your brain．At least one out of every five elementary school students in the US has trouble learning to read．even when the students are good at other subjects．___________ (1)Researchers from Yale University, US，studied a group of children from New York and Connecticut State。As part of the study,37 struggling readers received special tutoring．Every day，instructors worked with them on recognizing how written letters represent units of sound called phonemes(音素)．___________ (2)By the end of the school year, these children could read faster than before．They also made fewer mistakes，and understood more of what they read than they could earlier in the year．As part of their study, the researchers used a special machine to take action photos of the students’ brains．___________ (3)This is the same part of the brain that becomes active when good readers read．This activated brain area appears to include a structure that helps people recognize familiar written words quickly．In lower level readers，this structure remains inactive．A year later，the brain structure was still working hard in the students who had gone through the special tutoring，and they continued to do well in reading tests___________ (4)However, some researchers still doubt the study．___________ (5) A．Many adults are interested in matching sounds with letters.B．The students also practiced reading aloud and spelling．C．The biggest challenge for many of these kids，scientists say, is matching sounds with letters．D．Another group in the study who went through a more traditional reading program didn’t show the same progress．E．The pictures showed an increase in activity in the back of the brain on the left side．F．They believe that reading without making any noise or linking words to sounds is more efficient． 第 46 题 请选择（1）处最佳答案。

单项选择题 根据下列文章,请回答 16～22 题。 Sleeping People who sleep for more than eight hours a night do not live as long as those who sleep for Six hours，according to the biggest study yet into sleep patterns and mortality（死亡率）。Scientists have no explanation for the findings and do not know if they mean people who like a lie-in（睡懒觉）can extend their lives by sleeping less.Although it is a common I belief that sleeping for at least eight hours a night is vital for health and well-being，the six-year study involving more than l.1 million Americans Older than 30 found that those who slept for less than eight hours were far from doing themselves any long-term harm'Individuals who now average 6.5 hours of sleeps a night can be reassured that this is a safe amount of sleep. From a health standpoint，there is no reason to sleep longer，' said Daniel Kripke，a professor of psychiatry（精神病学）at the University of California San Diego.Dr.Kripke said，''We don't know if long sleep periods lead to death. Addition al Studios are needed to determine if setting your alarm clock earlier will actually improve your health.' l he scientists who were funded by the American Cancer Society，found that the best survival rates were among the men and women who slept for seven hours a night. 1 hose who slept for eight hours were 12 per cent more likely to die during the six-year period of the study，when other factors such as diet and smoking were taken into account.Even those who spent a mere five hours a night in bed lived longer than those who slept eight or more hours. However，an increasing death rate was found among those who slept for less than five hours. Dr.Kripke said，'Previous sleep studies have indicated that both short-and long-duration（持续时间）sleep had higher mortality rates-However-none of those studies was large enough to distinguish the difference between seven and eight hours a 1night.Until now' 第 16 题 More than one million Americans participated in the six-year study.A．RightB．WrongC．Not mentioned