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 out that certain changes in brain function may not be. One study found that muscle toss 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 of decline. The researchers looked at data that（7） ____ measurements 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 Mediterranean-style diet that is high in fiber and eliminates highly（20） ____ foods. （1）
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 out that certain changes in brain function may not be.
One study found that muscle toss 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 of decline.
The researchers looked at data that（7） ____ measurements 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 Mediterranean-style diet that is high in fiber and eliminates highly（20） ____ foods.
| （1）A. fades |
B. peaks |
C. edges |
D. halts |
| （2）A.universally |
B. alternatively |
C. tremendously |
D. suspiciously |
| （3）A. once |
B. lest |
C. while |
D. since |
| （4）A.accumulation |
B. acceleration |
C. consumption |
D. assumption |
| （5）A. measurement |
B. principal |
C. decision |
D. potential |
| （6）A. postpone |
B. undertake |
C. avoid |
D. evolve |
| （7）A. supported |
B. included |
C. evaluated |
D. reinforced |
| （8）A. dedicated |
B. applied |
C. combined |
D. compared |
| （9）A. with |
B. above |
C. via |
D. against |
| （10）A.negotiated |
B. managed |
C. scored |
D. played |
| （11）A.went away |
B. counted on |
C.set off |
D. went by |
| （12）A. parallel |
B.attributive |
C. similar |
D. corresponding |
| （13）A.involved |
B. released |
C. replaced |
D. charged |
| （14）A.collapse |
B.classify |
C. illustrate |
D. bridge |
| （15）A. demands |
B. symptoms |
C. compensation |
D.treatments |
| （16）A. Meanwhile |
B. Nonetheless |
C. Particularly |
D.Homogeneously |
| （17）A. transform |
B. suggest |
C. take |
D. count |
| （18）A. formation |
B. well-being |
C. image |
D. account |
| （19）A. passion |
B. knowledge |
C. extension |
D. level |
| （20）A. recycled |
B. preserved |
C. enveloped |
D. processed |