問題詳情

42 Which of the following statements is true? 
(A)The underground sewers have saved more lives than any medical procedure. 
(B)Many old sewers have been neglected and are in dire need of repair. 
(C)Dr. Hernandez and his colleagues made cultures from the mixture of bacteria found in sewer pipes. 
(D)The DNA screening of the samples was focused on bacteria only.

參考答案

答案:B
難度:適中0.531915
統計:A(10),B(25),C(6),D(2),E(0)

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