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Young Adults Who Exercise Get Higher IQ Scores Young adults who are fit h...

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问题 Young Adults Who Exercise Get Higher IQ Scores

Young adults who are fit have a higher IQ and are more likely to go on to university,reveals a major new study________(51) out at the Sahlgrenska Academy and Sahlgrenska University Hospital．

The results were recently published in the Proceedings of the National Academy of Sciences (PNAS).The study________(52)1.2 million Swedish men doing military service who were born between1950 and1976.The research group analyzed the________(53) of both physical and IQ tests the youngsters took fight after they started serving the army．

The study shows a clear link________(54) good physical fitness and better results for the IQ test.The strongest links are for________(55) thinking and verbal comprehension.But it is only fitness that plays a ________(56) in the results for the IQ test,and not strength．"Being fit means that you also have good heart and lung________(57) and that your brain gets plenty of oxygen,” says Michael Nilsson,professor at the Sahlgrenska Academy and chief physician at the Sahlgrenska University Hospital．"This may be one of the reasons why we can see a clear link with fitness,but not with muscular ________(58)．We are also seeing there are growth factors that are important．"

By analyzing data for twins,the researchers have been ________(59) to determine that it is primarily environmental factors and not genes that ________(60) the link between fitness and a higher IQ．

"We have also shown that those youngsters who ________(61) their physical fitness between the ages of 15 and 18 increase their cognitive performance," says Mafia berg, researcher at the Sahlgrenska Academy and physician at by health centre．"This being the case,physical education is a ________(62) that has an important place in schools,and is an absolute must________(63) we want to do well in math and other theoretical subjects."

The researchers have also compared the results from fitness tests during national service________(64) the socioeconomic status of the men later in lifeThose who were fit at18 were more ________(65) to go into higher education,and many secured more qualified jobs．
选项 A among
B behind
C inside
D between
答案D
解析本句要表达两者之间的联系，所以应该选择 D between。选项 A among 表达三者之间的关系；选项 B 为"在……之后"；选项 C 为"在……里面"，都不符合句意。
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