79 What does the term “Mr. Trash Wheel” refer to?
(A) A device in a river to collect litter and debris
(B) A scientist studying how to remove microfibers
(C) An endangered species affected by microplastics
(D) An organization for waste management systems
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“先生”這個詞是什麼意思？垃圾輪”指的是...
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文章中提到 "Mechanical sy...
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(A) A device in a ri...
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