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  3. Advancing age means losing your hair, your waistline and your memory, right? Dana Denis is just 40 years old, but【C1】______she’s

Advancing age means losing your hair, your waistline and your memory, right? Dana Denis is just 40 years old, but【C1】______she’s

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问题     Advancing age means losing your hair, your waistline and your memory, right? Dana Denis is just 40 years old, but【C1】______she’s worried about what she calls "my rolling mental blackouts. " "I try to remember something and I just blank out," she says.
    You may【C2】______about these lapses, calling them " senior moments " or blaming " early Alzheimer’s(老年痴呆症)". Is it an inescapable fact that the older you get, the【C3】______you remember? Well, sort of. But as time goes by, we tend to blame age【C4】______problems that are not necessarily age-related.
    " When a teenager can’t find her keys, she thinks it’s because she’s distracted or disorganized," says Paul Gold. "A 70-year-old blames her【C5】______. " In fact, the 70-year-old may have been【C6】______things for decades.
    In healthy people, memory doesn’t worsen as【C7】______as many of us think. "As we【C8】______, the memory mechanism isn’t【C9】______," says psychologist Fergus Craik. "It’s just inefficient.
    The brain’s processing【C10】______slows down over the years, though no one knows exactly【C11】______Recent research suggests that nerve cells lose efficiency and【C12】______there’s less activity in the brain. But, cautions Barry Gordon, "It’s not clear that less activity is【C13】______.A beginning athlete is winded(气喘吁吁)more easily than a【C14】______athlete. In the same way,【C15】______the brain gets more skilled at a task, it expends less energy on it.
    There are【C16】______you can take to compensate for normal slippage in your memory gears, though it【C17】______effort. Margaret Sewell says; "We’re a quick-fix culture, but you have to【C18】______to keep your brain【C19】______shape. It’s like having a good body. You can’t go to the gym once a year【C20】______expect to stay in top form. "
【C13】
选项 A、irregular
B、better
C、normal
D、worse
答案D
解析 上下文推理。上文提到，研究结果表明：神经细胞效率丢失会导致大脑活动减少。转折连词but和动词cautions表明Barry Gordon并不同意这种说法，所以本句的意思应该是“尚不清楚活动较少是否会更糟”，D项为正确答案。A项irregular(不规则的)，B项better(更好的)，C项normal(正常的)，均不合题意。
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