As we all know,the whole life of the doctor____studying the origin of cancerA has devoted to B was being devoted to C was devoted to Dhas been devoted to选哪个,为什么?每个选项解释下?

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Asweallknow,thewholelifeofthedoctor____studyingtheoriginofcancerAhasdevotedtoBwasbeingdevotedtoCwasd

As we all know,the whole life of the doctor____studying the origin of cancerA has devoted to B was being devoted to C was devoted to Dhas been devoted to选哪个,为什么?每个选项解释下?
As we all know,the whole life of the doctor____studying the origin of cancer
A has devoted to B was being devoted to C was devoted to Dhas been devoted to
选哪个,为什么?每个选项解释下?

As we all know,the whole life of the doctor____studying the origin of cancerA has devoted to B was being devoted to C was devoted to Dhas been devoted to选哪个,为什么?每个选项解释下?
选D.sb devote some time to doing sth.某人把时间奉献于做某事.
the whole life作主语 应为：some time be devoted to doing （时间被奉献于做某事）
现在用的是一般现在完成时,为some time has been devoted to doing
所以选D

选D， sb devote sth to doing sth ,而题中是sth作主语，所以用被动，排除A； As we all know，是众所周知，即是事实，用一般现在时，则排除B 、C

选D。中文翻译：正如我们所知，一个医生的一生都被用来研究癌症的来源。
A不是被动语态；B不是完成时；C只是被动语态但却不是完成时。

A has devoted to
devote to把...献给; 把...专用于
devote oneself to 致力于, 献身于; 专心

选D,首先这肯定要选被动语态，因为是sb devote sth/oneself to ....,所以BCD里头选。再来看时态，根据句子的意思揣测：众所周知，这位医生的一生都奉献给了研究癌症起源，应该是完成时,而不是进行时或者过去时。或者你可以把他变为主动来看：As we all know, the docotor has devoted his whole life to studying the...

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选D,首先这肯定要选被动语态，因为是sb devote sth/oneself to ....,所以BCD里头选。再来看时态，根据句子的意思揣测：众所周知，这位医生的一生都奉献给了研究癌症起源，应该是完成时,而不是进行时或者过去时。或者你可以把他变为主动来看：As we all know, the docotor has devoted his whole life to studying the origin of cancer

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