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2021年全国硕士研究生招生考试英语（ 一） 试题
Section IUse ofEnglish
Directions:
Read the following text. Choose the best word(s) for each numbered blank and mark [A], [B], [C]
or [D] on the ANSWER SHEET. (10 points)
Fluid intelligence is the type of intelligence that has to do with 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 that certain changes in brain function may not be.
One study found that muscle loss and the 4 of body fat around the abdomen are associated
with a decline in fluid intelligence. This suggests the  5 that lifestyle factors might help prevent
or 6 this type ofdecline.
The researchers looked at data that 7measurements of lean muscle and abdominal
fat from more than 4,000 middle-to-older-aged men and women and  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 fat  10 worse on measures of fluid intelligence as the
years 11 .
For women, the association may be 12  to changes in immunity that resulted from
excess abdominal fat; in men, the immune system did not appear to be 13 . It is hoped that
future studies could  14 these differences and perhaps lead to different  15  for men
and women.
16 , there are steps you can  17 to help reduce abdominal fat and maintain lean
muscle mass as you age in order to protect both your physical and mental 18 . The two
highly recommended lifestyle approaches are maintaining or increasing your 19  of
aerobic exercise and following a Mediterranean-style 20  that is high in fiber and
eliminates highly processed foods.