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【单选题】
传统生物技术主要是通过（ ）来生产产品。A.
植物培养
B.
动物饲养
C.
微生物发酵
D.
化学合成
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反馈参考答案：
举一反三
【简答题】控制数据传输的各种设备有 、 、 和 。
【单选题】选择题。 — What do you know Canadians? — I know they ______ English and French. [ ]
A.
about, speak
B.
of, say
C.
of, speak
D.
about, say
【简答题】Traffic lights are very important for us. I think you know this. But do you know how they were born? Garrett A. Morgan was the father of traffic lights. He was an American. His family was very poor. H...
【简答题】将下列句子译成汉语 1. An acquaintance is someone whose name you know, who you see every now and then, who you probably have something in common with and who you feel comfortable around. 2. An acquaintance is ...
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