The retired professor, _____ in his new book in the past three years, hasn’t realized the decline in his health.
A．involved B．being involvedC．having involvedD．to be involved
A

試題分析：本題實(shí)際上考察了一個(gè)固定搭配be involved in…參與…卷入….，致力于…；其中的involved是一個(gè)形容詞，本句中形容詞短語(yǔ)involved in his new book in the past three years是對(duì)句中主語(yǔ)The retired professor的情況進(jìn)行的說明。句義：那位在過去三年里致力于新書的退休教授還沒有意識(shí)到自己健康方面的下降。故A正確。
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