According to scientists,our mental abilities begin to _____

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According to scientists,our mental abilities begin to _____ from the age of 27
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
请解释每一个选项.

科学家说,我们的心智从27岁开始减退,从最高峰的22岁开始.（22岁智力最高峰后,27岁开始减退.）
a.differ 与…不同 b.shrink 收缩 C.fall 下降（树叶落下 leaves fall）d.decline （能力权利等的）下降衰退
关键在于这个“highest level” 最高峰最高水平由高至低的衰退

According to scientists,our mental abilities begin to _____ According to scientists,our mental abilities begin to declin According to an English newspaper, scientists could begin cl These scientists are working hard to make our country _____. mental-to-mental是什么意思英语翻译有句老外的谚语：From each according to his abilities,to each acc According to scientists,before the age of 7,ch According to the law of our country,it is _____ get your dri develop our ____(能力）to study on our own.填ability还是abilities? 在线求指导：According to _____ W According to _____ survey conducted last month,_____ fourth 英语首字母填空： According to scientists,in 2020,two spacecrafts wil