2021考研英语一真题及答案解析VIP免费

2021 考研英语一真题及答案解析Section I Use of EnglishDirections:Read the following text. Choose the best word(s) for eachnumbered blank and mark A, B, C or D on the ANSWER SHEET. (10points)Fluid intelligence is the type of intelligence that has to dowith short-term memory and the ability to think quickly,logically, and abstractly in order to solve new problems. It_____(1)in young adulthood, levels out for a period of time,and then_____(2)starts to slowly decline as we age.But_____(3)aging is inevitable, scientists are finding thatcertain changes in brain function may not be.One study found that muscle loss and the_____(4)of body fataround the abdomen are associated with a decline in fluidintelligence. This suggests the_____(5)that lifestyle factorsmight help prevent or_____(6)this type of decline.The researchers looked at data that_____(7)measurements oflean muscle and abdominal fat from more than 4,000middle-to-older-aged men and women and_____(8)that data toreported changes in fluid intelligence over a six-year period.They found that middle-aged people_____(9)higher measures ofabdominal fat_____(10)worse on measures of fluid intelligenceas the years_____(11).For women, the association may be_____(12)to changes inimmunity that resulted from excess abdominal fat; in men, theimmune system did not appear to be_____(13)It is hoped thatfuture studies could_____(14)these differences and perhapslead to different_____(15)for men and women._____(16)there are steps you can_____(17)to help reduceabdominal fat and maintain lean muscle mass as you age in orderto protect both your physical and mental _____(18). The twohighly recommended lifestyle approaches are maintaining orincreasing your_____(19)of aerobic exercise and followingMediterranean-style____...