2021年考研英语一真题

Section I Use of EnglishDirections:Read the following text.Choose the best word(s)for each numbered blank and markA,B,C or D on the ANSWER SHEET.(10 points)Fluid intelligence is the type of intelligence that has to do with short-termmemory and the ability to think quickly,logically,and abstractly in order to solvenew problems.It 1 in young adulthood,levels out for a period of time,andthen 2 starts to slowly decline as we age.But 3 aging is inevitable,scientists are finding out that certain changes in brain function may not be.One study found that muscle loss and the 4 of body fat around theabdomen are associated with a decline in fluid intelligence.This suggests the5 that lifestyle factors might help prevent or 6this type of decline.The researchers looked at data that 7 measurements of lean muscleand abdominal fat from more than 4,000 middle-to-older-aged men and womenand 8 that data to reported changes in fluid intelligence over a six-year period.They found that middle-aged people 9 higher measures of abdominal fat10 worse on measures of fluid intelligence as the years 11.For women,the association may be 12 to changes in immunity thatresulted from excess abdominal fat;in men,the immune system did not appear tobe 13.It is hoped that future studies could 14 these differences andperhaps lead to different 15 for men and women.16 there are steps you can 17 to help reduce abdominal fat andmaintain lean muscle mass as you age in order to protect both your physical andmental 18 The two highly recommended lifestyle approaches are maintainingor increasing your 19 of aerobic exercise and following Mediterranean-style20 that is high in fiber and eliminates highly processed foods.1.