The description of the past natural environment is important in that
A.it is one part of human history.
B.it should be included in the history of the universe.
C.it can partly explain the way of life of the people in the past.
D.it decided the human history.
第4题
口含片、咀嚼片的主要稀释剂和矫味剂是()。
A. 淀粉
B. 乳糖
C. 甘露醇
D. 枸橼酸
E. 糊精
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