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Children have been said to have brain-injured child syndrome, hyperactive (极度活跃的) child syndrome and attention-deficit disorder (ADD). As early as the 1940’s, psychiatrists have (67) children with hyperactivity and extremely distracted and impulsive (冲动的). These frequent name changes show how (68) researchers are about the causes (69) the problem and the diagnostic criteria for the disorders. In the past several years, the people who (70) attention deficit hyperactivity disorder (ADHD) have (71) to clarify the disorder’s causes and (72) , and have reasons to believe that it may be genetic. Today’s view (73) this disorder is very different from the beliefs of just a few years ago. Researchers are finding that ADHD is not a disorder of just attention, but is from a developmental (74) in the brain’s circuitry and self-control. The loss of self-control (75) other important brain functions mandatory for maintaining (76) . ADHD involves two sets of symptoms: inattention and a (77) of hyperactive and impulsive behaviors. Most children are more active and distractive than adults are. Children are more inconsistent, affected by brief actions. The younger the child, the less (78) they are. This behavior is a (79) of a problem when it is displayed more in them than in their (80) . Boys are at least three times more (81) than girls to have ADHD. Studies have found that ADHD in boys outnumbers girls 9 to 1, this is because boys are genetically likely to (82) disorders in the nervous system. These behaviors generally (83) between the ages of 3 and 5. (84) , some children don’t start to develop the disorder until (85) childhood or early adolescence. Researchers are unable to find the reasons for this (86) .
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Children have been said to have brain-injured child syndrome, hyperactive (极度活跃的) child syndrome and attention-deficit disorder (ADD). As early as the 1940’s, psychiatrists have (67) children with hyperactivity and extremely distracted and impulsive (冲动的). These frequent name changes show how (68) researchers are about the causes (69) the problem and the diagnostic criteria for the disorders. In the past several years, the people who (70) attention deficit hyperactivity disorder (ADHD) have (71) to clarify the disorder’s causes and (72) , and have reasons to believe that it may be genetic. Today’s view (73) this disorder is very different from the beliefs of just a few years ago. Researchers are finding that ADHD is not a disorder of just attention, but is from a developmental (74) in the brain’s circuitry and self-control. The loss of self-control (75) other important brain functions mandatory for maintaining (76) . ADHD involves two sets of symptoms: inattention and a (77) of hyperactive and impulsive behaviors. Most children are more active and distractive than adults are. Children are more inconsistent, affected by brief actions. The younger the child, the less (78) they are. This behavior is a (79) of a problem when it is displayed more in them than in their (80) . Boys are at least three times more (81) than girls to have ADHD. Studies have found that ADHD in boys outnumbers girls 9 to 1, this is because boys are genetically likely to (82) disorders in the nervous system. These behaviors generally (83) between the ages of 3 and 5. (84) , some children don’t start to develop the disorder until (85) childhood or early adolescence. Researchers are unable to find the reasons for this (86) .
The Olympic Games are held every four years, each time in a different city. The Games begin when a runner, carrying a lighted torch brought from (36) , reaches the stadium. The athletes (37) against one another in various (38) : they jump, cycle, swim, wrestle and show their skills in gymnastics, fencing and (39) . Others test their strength and (40) in the difficult marathon and weightlifting. The winners do not (41) any cash prizes. Instead the first three athletes in any event receive gold, (42) and bronze medals. Nobody knows exactly when the first Olympic Games were held. The (43) show that they took place as long ago as 776 B.C. (44) . However, in 1896, a Frenchman started the Games again in Athens. (45) . Perhaps the one important difference is that women are now allowed to compete. In fact the events for women are now very popular. At the Games, all the athletes feel honored to represent their countries. They know the friendships they form with other athletes will (46) . This is the major purpose of the Olympic Games.
关于中世纪西欧： 欧洲中世纪的骑士教育是世俗教育的一种主要形式，它由专门的骑士学校进行。
In colonial times women provided health care for their families and neighbors. Doctors were often not (47) , and at that time they had not learned to cure many of the illnesses that we often go to a doctor for today. So women usually cared for the sick in their homes. Women did the work of both nurses and midwives, caring for people when they were sick and (48) babies. Women also provided (49) medical services in the wars that our country was involved in. Women cared for wounded soldiers in the Revolutionary War and the Civil War. Their (50) work was the real beginning of modern nursing practices. Doctors became more (51) of the work done by nurses after seeing the skill that they used to treat the wounded soldiers. Training for nurses became more (52) available after the Civil War. By the middle of the 1800’s, hospitals were being built to treat the sick and injured. The American Medical Association was also formed to (53) medical care. Medical schools trained doctors in modern medical practices. As hospitals became more widespread, the role of women in medicine (54) for a while. At first medical schools were only for men, and people began to look down on female nurses and midwives who did not have medical (55) . Now many people preferred to be treated by a (56) doctor in a hospital.A) valuableF) wartime K) femaleB) deliberatelyG) control L) schoolingC) deliveringH) regulate M) acceptingD) receptionI) male N) inclinedE) readilyJ) available O) declined
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