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—It is reported that there is          big breakthrough in the cancer treatment.
—If only his son could be brought back to         life!
A．a(chǎn) ; 不填B．不填 ; aC．the ; theD．a(chǎn) ; the
A
考察冠詞，a breakthrough 一個突破，表示泛指   life 意為生活的時候是不可數(shù)名詞，作生命的時候是可數(shù)名詞
句意為，--據(jù)報道，在癌癥治療方面出現(xiàn)了一個大的突破---要是他的兒子能活過來就好了
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