[单选题]Ⅰ期内痔患者排便时（ ）
A.无明显症状
B.出现无痛性出血
C.有喷射状出血
D.痔块脱出，可自行回纳
E.痨块脱出，不能自行回纳

{{B}} A
Maturationionist Theory{{/B}}
The maturationist theory was advanced by the work of Arnold Gessell. Maturationists believe that development is a biological process that occurs automatically in predictable, sequential stages over time. This perspective leads many educators and families to assume that young children will acquire knowledge naturally and automatically as they grow physically and become older, provided that they are healthy.
School readiness, according to maturationists, is a state at which all healthy young children arrive when they can perform tasks such as reciting the alphabet and counting; these tasks are required for learning more complex tasks such as reading and arithmetic. Because development and sc