David singer,my friend's father,- raised and educated in New York,lived and lectured in Africa.a who b if c while d though就是纠结于CD之间 答案是选D得可是C为什么不可以呢 while不是也有转折的意思吗?

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David singer,my friend's father,- raised and educated in New York,lived and lectured in Africa.a who b if c while d though就是纠结于CD之间 答案是选D得可是C为什么不可以呢 while不是也有转折的意思吗?

David singer,my friend's father,- raised and educated in New York,lived and lectured in Africa.a who b if c while d though就是纠结于CD之间 答案是选D得可是C为什么不可以呢 while不是也有转折的意思吗?
David singer,my friend's father,- raised and educated in New York,lived and lectured in Africa.
a who b if c while d though
就是纠结于CD之间 答案是选D得可是C为什么不可以呢 while不是也有转折的意思吗?

David singer,my friend's father,- raised and educated in New York,lived and lectured in Africa.a who b if c while d though就是纠结于CD之间 答案是选D得可是C为什么不可以呢 while不是也有转折的意思吗?
Though是‘尽管’的意思,表让步(退一步)的意思,而while表示‘但是)的意思,纯属转折.两者意思不一样,你要仔细体会啊

(who
后缺谓语动词 while 表时存在的并列转折 though 表转折)选D