According to scientists, our mental abilities begin to____ from the age of 27 af
题型：不详难度：来源：
According to scientists, our mental abilities begin to____ from the age of 27 after reaching the highest level at 22.| A．differ | B．shrink | C．fail | D．decline |
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答案
| D |
解析
试题分析：考查动词辨析：句意：据科学家研究表明，我们大脑的能力在22岁左右达到最高，从27岁开始逐渐消退。A. differ不同，B. shrink 缩水，C. fail失败，失灵，D. decline 衰退，下降，吸引，选D。 |
举一反三
—Mummy, can I put the peaches in the cupboard?
—No, dear. They don’t ____ fresh. Put them in the fridge instead. |
—Hi, Monica. Have you made up your mind yet?
—Well, _______. I think I’m going to take up hairdressing. | A．sooner or later | B．more or less | | C．better or worse | D．now and then |
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“I don’t think it’s my _______ that the TV blew up. I just turned it on. That’s all.” said the boy.| A．error | B．mistake | C．fault | D．duty |
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Teachers have to constantly update their knowledge in order to maintain their professional _____. | A．consequence | B．independence | C．competence | D．intelligence |
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A new study indicates that basic steps taken by people daily can go a long way in ____ the greenhouse gas emission.| A．cutting down | B．taking down | | C．pulling down | D．breaking down |
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