What do non-physiological and physiological explanations have in common?
A. Paradox.
B. Dilemma.
C. Plausibility.
D. Ambiguous.
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What does the author imply by saying \"living space.., is figured.., also in cubic volume above the earth\" in Para. 3 ?
A. We need to take some measures to protect .space.
B. We must preserve good living conditions for both birds and rand animals.
C. Our living space should be measured in cubic volume.
D. Our living space on the earth is getting smaller and smaller.
下列文献中,由美国医院药师协会编辑出版的二级文献是()。
一位体重为20 kg的儿童患呼吸道感染,可服用琥乙红霉素颗粒,需要剂量为50mg/(kg·d),分4次服用,一次剂量应为()。