阿摩線上測驗
30 What was Suzie Hwang Pun when she discovered polymers?
(A)She was a traffic policewoman.
(B)She was a chemical engineer.
(C)She was a cancer doctor.
(D)She was a graduate student.
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統計： A(4), B(13), C(7), D(17), E(0) #2140806
統計： A(4), B(13), C(7), D(17), E(0) #2140806
