题海让大学四年没有难题
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单选题 Cet-4-1.19-Exercise 02 The study, which followed more than 2,000 healthy adults between the ages of 18 and 60, found that certain mental functions – including measures of abstract reasoning, mental speed and puzzle-solving – started to dull as early as age 27. What does the new study find about mental functions

A. Some of them begin to decline when people are still young

B. They are unpredictable

C. They reach a peak at the age of 20 for most people

D. They are immeasurable

学科:默认课程

时间:2025-12-27 00:36:07

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