A
(2020·山东夏季高考模拟)Heads up！Across the country，sports injuries are a safety concern for young athletes.Now，the American Medical Association(AMA) has a new set of guidelines aimed at protecting players from the danger of concussions—serious injuries caused by a blow to the head.
“By raising awareness of the serious risks associated with concussions and ensuring that appropriate guidelines are in place，we can reduce the number of young athletes who may return to the game too soon，which can put their health at further risk，”said AMA Board Member Jack Resneck Jr.，M.D.，in a statement.
The policy recommends that young athletes who may have a concussion be taken off the field as soon as possible.Then，they are only to return to their sport with a doctor's written approval.The policy also sets agespecific rules for health care professionals and athletic organizations in evaluating and caring for concussions.
According to the Center for Disease Control and Prevention (CDC)，a concussion is a type of traumatic (创伤的) brain injury caused by a bump，blow，or jolt to the head or hit to the body that causes the head and brain to move rapidly back and forth.This type of movement can cause the brain to bounce or twist inside the skull (颅骨)．It can damage brain cells and create chemical changes in the brain.
The CDC says that between 1.6 million and 3.8 million traumatic brain injuries caused by sports and recreationrelated activities occur in the U．S.every year.A study from the Center for Injury Research and Policy showed that as many as 40% of high school athletes return to playing before they should.The AMA's new guidelines should help to bring those numbers down.
1．Why does the AMA set the new guidelines?
A．To raise safety standards of sports.
B．To protect athletes from concussions.
C．To set rules for health care evaluation.
D．To help players return to the game quickly.
2．What should young athletes who may have a concussion do?
A．Avoid using the head.
B．Leave the field forever.
C．Get medical treatment in time.
D．Switch to another sport.
3．What is Paragraph 4 mainly about?
A．What a concussion is.
B．What causes damage to brain cells.
C．How the CDC works.
D．How a concussion can be prevented.
4．Which of the following is the best title for the text?
A．Rules for Safer Play
B．Sports Injuries in the US
C．Advice to Athletes
D．New Policies for Doctors
【语篇解读】 本文为新闻报道。文章介绍了为保护运动员免受脑震荡的威胁，美国医学协会制定了一套新的指导方针。
1．解析：事实细节题。根据文章第一段“Now，the American Medical Association (AMA) has a new set of guidelines aimed at protecting players from the danger of concussions”可知答案为B项。
答案：B
2．解析：推理判断题。根据文章第三段第一句话可知，年轻运动员在头部受伤后应立即离开运动场地。后面讲到只有经过医生的书面批准才能回归，故选C项。
答案：C
3．解析：段落大意题。第四段第一句话说明了什么是“concussions”；第二句话和第三句话指出了其造成的危害。故选A项。
答案：A
4．解析：主旨大意题。通读全文可知，现在美国医学协会制定了一套新的指导方针，旨在保护运动员免受脑震荡的威胁。故选A项。
答案：A
