Retention refers to______.A. for younger and olde
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Retention refers to______.
A. for younger and older people
B. to the proper function of your memory
C. is called long-term memory
D. the capacity to store what you have learned
E. belongs to very long-term memory
F. the ability to remain mentally healthy
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答案：D
第六段第一句中的“the ability to store what you have learned”就是它前面的名词“retention”的同位语，只是本题将ability换成capacity而已。