It has revealed that the vitamin D __ slowing down the aging process.到底选什么呢?A.plays an important effect inB.plays a key role in C.takes an important part in我觉得B和C意思差不多吧?

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It has revealed that the vitamin D __ slowing down the aging process.到底选什么呢?
A.plays an important effect in
B.plays a key role in
C.takes an important part in
我觉得B和C意思差不多吧?

B,上面的解释都很对,
play a part (in) 是 在……中起作用,参与;
play a role in 是在某方面起作用,在……中扮演一个角色,在……中起作用;
而 take part是指参加活动,而不是参与 作用
如果要修改的话应该是
A.has (takes) an important effect in
C.plays an important part in
这样3个选项就都对了.

请问这“个调查显示”是用“The research revealed that”还是The research has revealed that 英语翻译Previous work has revealed that Unirule has a demonstrated capacity to mobilize a large number of experts from a wide range of organisations (ranging from central government institutions to the academia and NGOs).It has also been able to It has revealed that the vitamin D __ slowing down the aging process.到底选什么呢?A.plays an important effect inB.plays a key role in C.takes an important part in我觉得B和C意思差不多吧? 请帮忙翻译一下这句话,不要用翻译工具,谢谢!As a result, it was revealed that RB21 was preferentially removed in mixed dye systems onto ZEC. it was from words dropped by chance that,little by little,everything was revealed to me.请问 it was from words dropped by chance that 这一句 dropped 怎么理解 它的前面是否省略了 that is it has long been known that word has it that 是什么从句 英语翻译Intelligence sources in Washington have revealed that Western spy chiefs were recently forced to revise dramatically their view that al-Qaeda was so depleted that it was little more than a cheerleader for extremists. 英语翻译Specific Microsolvation Triggers Dissociation-Mediated Anomalous Red-Shifted Fluorescence in the Gas PhaseAbstractIon-depletion IR spectroscopy has revealed that at least two water molecules are required in complexes with 4-(dimethylamino the wordfriendshiphas used so much that it seems that it has its meaning.翻译 it seems that he has----- (succeed )solved that problem. It's reported that it has changed a 英语翻译Thirdly,it is alleged that the past two decades have revealed a singular want of clarity about the great ends of living,attachment to which gives significance and direction to a life. 下面这句话中but that this ,that指代什么吗?是从句吗It was revealed on Sunday that Mr Yaalon was a distant relative but that this had been concealed as it was feared it might have been used by Hamas if Lt Goldin were being held captive. What is it that Adam has one,Eve has two and everyone has three? it prefer music that has great lyrics 改为同一句 i ------- music that has great lyrics -------- I live in a small house _____ four room.A.that has B.that it hasC.that has it D.and has it讲原因, rumor has it that he is resigned 中的has it 怎么理解