单项选择题
A.50-55% B.55-60% C.60-65% D.65-70%
A.嗅觉好 B.味觉好 C.视力好
A.8-11mm B.12-15mm C.16-18mm D.20-22mm
A.5个月 B.4个月 C.3个月 D.2个月
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