4. You have been given vials of H2, Na, H2O, Hg, and CH4. What are the majority of your vials filled with?
(A) liquids at room temperature
(B) gases
(C) molecules
(D) carboxyls

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統計: A(1), B(0), C(0), D(0), E(0) #4041825

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#7520804
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