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(1)When are you __3__ ? From 18 to 25, according to I. Q. scores; but you're wiser and more __4_experienced__ with increasing age. At around 30, mental abilities begin to decline, __5__ your ability to do maths. But your ability to complete other tasks __6_climbs__. For example, your vocabulary increases over time. At 60, your brain __7_possesses__ almost four times as much information as it did at age 21. Because of this, some psychologists suggest that “maturity quotients” (M. Q．) be used to measure intelligence for __8_adults__. () 3. A. best B. smartest C. most mature D. most skilled () 5. A. generally B. specially C. mainly D. particularly 【答案及解析】 3. B 根据下文“From 18 to 25, according to I．Q. scores”得知问的应该是关于智商方面的问题，所以应该选smartest最聪明。 【答案及解析】 5. D 根据上文mental abilities begin to decline和下文your ability to do maths的语义和逻辑，应该选particularly；意思是30岁左右智力开始下降，尤其是数学方面的能力。 (2011广州市一模) (2)When are you most creative? Generally between 30 and 39, but it __13_varies__ with different professions. The highpoints in areas such as science and economics come __14__ — most Nobel prize winners did their top research in their 20's and 30's — but for people who keep an active mind, there is no upper age __15_limit__. | 
