118. The laboratory requires that all chemical samples be handled with the _______ care to prevent contamination.
(A) utmost
(B) upper
(C) utter
(D) upright
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統計: A(108), B(40), C(24), D(27), E(0) #3805126
統計: A(108), B(40), C(24), D(27), E(0) #3805126