47. According to the passage, how long does it take for smaller-sized nanoplastics to disappear from scallops’ bodies?
(A) 6 hours
(B) 2 weeks
(C)48 days
(D) 51 seconds

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統計： A(16), B(63), C(15), D(2), E(0) #2064186

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47.【題組】47. According...
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