问题
选择题
Jimmy has invented a set of equipment independently to produce valuable chemicals with waste materials
______ by others.[ ]
A. abrupt
B. abused
C. abandoned
D. adapted
答案
答案：C
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Jimmy has invented a set of equipment independently to produce valuable chemicals with waste materials
______ by others.[ ]
A. abrupt
B. abused
C. abandoned
D. adapted
答案：C
