该病确诊有赖于
A．血常规检查
B．粪便或活组织中检出血吸虫虫卵
C．血清环卵沉淀试验阳性
D．纤维肠镜检查
E．腹部B超检查
参考答案：B
"创伤后应激障碍"的主要症状是（）。
A.闯入性回忆
B.过度警觉
C.失眠
D.情绪迟钝
The closer the blood relationship between two people, the closer they are in intelligence. If we take two unrelated people _____, their degree of intelligence might be completely different.
A．at ease
B．at random
C．in the flesh
D．in many ways
