阿摩線上測驗
38. According to the passage, xenobots are environment friendly because _____.
(A) they are powered by batteries
(B) they eat microplastics in the ocean
(C) they become dead cells after a week or longer
(D) they are less than one millimeter wide
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統計： A(4), B(42), C(247), D(3), E(0) #2914618
統計： A(4), B(42), C(247), D(3), E(0) #2914618
