39. According to the passage, if a scientist repeats an experiment several times and does not produce similar results each time, the experiment must be
(A)expedient
(B)invalid
(C)scientific
(D)accurate

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統計: A(8), B(204), C(8), D(3), E(0) #1412732

詳解 (共 2 筆)

#4206738

(A)權宜之計

(B)無效

(C)科學

(D)準確。

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#2178995
expedient  a. 方便的;有利...
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