34 In this passage, the three genetically engineered medical products are p...

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问题
34 In this passage, the three genetically engineered medical products are presented

选项 A as a process.
B from earliest to latest/
C in a simple list.
D as a story.

答案C

解析从文章的表达方式来看,可以很朋显看到,这三种通过遗传工程产生的医疗产品是 以罗列的方式来介绍的,其他三个选项均不符合文章的实际内容。
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