We now obtain more than two-thirds of our protein from animal sources, while our grandparents ________only one-half from animal

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问题 We now obtain more than two-thirds of our protein from animal sources, while our grandparents ________only one-half from animal sources.

选项 A、originated
B、digested
C、deprived
D、derived

答案D

解析 题干:现在我们从动物中获取了三分之二的蛋白质,而我们祖父母那一代的蛋白质只有一半是从动物中获取的。derive得自;deprive剥夺,使丧失,常见搭配为deprive sb.of sth.句型。originate发源;digest摘要,消化。根据题意,D为正确选项。
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