19. In addition to having more protein than wheat does, the protein in rice is higher quality than that in wheat, with more of the amino acids essential to the human diet.fficeffice" />
(A) the protein in rice is higher quality than that in
(B) rice has protein of higher quality than that in
(C) the protein in rice is higher in quality than it is in
(D) rice protein is higher in quality than it is in(B)
(E) rice has a protein higher in quality than
不太明白选项B中than从句与主句是怎么平行的?好象两边结构很不一样,是有省略吗?那位高手能帮我把省略的部份补出来?
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