正常精液未成熟生精细胞应为()
A.<1%
B.<4%
C.<5%
D.<3%
E.<2%
参考答案:E
To stay awake, he finished a cup of coffee and ordered ________. [ ]
A. the other
B. other
C. the others
D. another
请你用简洁的语言解释漫画系列图甲中出现的现象,并指出图乙的某厂家招贴画中出现的一处科学性错误:
甲图:______
乙图:______.