2021年甘肃省高考英语总复习：阅读理解
1．Heads up! Across the country， sports injuries are a safety concern for young athletes． Now， the American Medical Association （AMA） has a new t of guidelines aimed at protecting players from the danger of concussions﹣rious injuries caud by a blow to the head．
"By raising awareness of the rious risks associated with concussions and ensuring that the 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 ts age﹣specific rules for health care professionals and athletic organizations in evaluating and caring for concussions．
According to the Center for Dia Control and Prevention （CDC）， a concussion is a type of traumatic（创伤） brain injury caud by a bump， blow， or jolt to the head or hit to the body that caus the head and brain to move rapidly back and forth． This type of movement can cau the brain to bounce around 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 caud by sports and recreation﹣related activities occur in the U．S． every year． A study from the Center tor Injury Rearch 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 tho numbers down．
（1）Why does the AMA t the new guidelines？
A． To rai safety standards of sports．
世界警察日
B． To protect athletes from concussions．印染废水处理工艺
C． To t 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．
生死爱恨一念间C． Get treatment in time．
D． Switch to another sport．
（3）What is paragraph 4 mainly about？一分米等于几厘米
A． What a concussion is．
顺境与逆境B． What caus damage to brain cells．
C． How the CDC works．
D． How a concussion can be prevented．
观察一种植物日记（4）Which of the following is the best title for the text？
A． Rules for Safer Play
B． Sports Injuries in the US
白吐司面包C． Advice to Athletes
D． New Policies for Doctors
2．Some parents will buy any high﹣tech toy if they think it will help their child，but rearchers said puzzles help children with math﹣related skills．
Psychologist Susan Levine，an expert on mathematics development in young children at the University of Chicago，found children who play with puzzles between ages 2 and 4 later develop better spatial skills．Puzzle play was found to be a significant predictor of cognition（认知）after controlling for differences in parents' income，education and the a
mount of parent talk，Levine said．
The rearchers analyzed video recordings of 53 child﹣parent pairs during everyday activities at home and found children who play with puzzles between 26 and 46 months of age have better spatial skills when assd at 54 months of age．
"The children who played with puzzles performed better than tho who did not，on tasks that assd their ability to rotate（旋转）and translate shapes，" Levine said in a statement．
The parents were asked to interact with their children as they normally would， and about half of the children in the study played with puzzles at one time．Higher﹣income parents tended to have children play with puzzles more frequently，and both boys and girls who played with puzzles had better spatial skills．However，boys tended to play with more complex puzzles than girls，and the parents of boys provided more spatial language and were more active during puzzle play than the parents of girls．
韭菜籽粉
The findings were published in the journal Developmental Science．
（1）In which aspect do children benefit from puzzle play？
A．Building confidence．
B．Developing spatial skills．
C．Learning lf﹣control．
D．Gaining high﹣tech knowledge．
（2）What did Levine take into consideration when designing her experiment？
