Which of the following statements about Origen an
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Which of the following statements about Origen and Embrex is correct according to the fifth paragraph?
A. Origen and Embrex will jointly invent machines to increase production.
B. Origen wants to purchase an efficient donor cells injecting machine.
C. Origen has cooperated with Embrex in producing cell-injecting machines.
D. Origen is the leading company in producing embryo-locating machines.
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答案：C
该段第二句中which引导的从句表明，是Embrex生产疫苗注射装置，而不是两家研究单位共同研制。Embrex在此基础上将装置改造为细胞注射装置。所以，只有C最接近原意。