流行性出血热早期休克的原因是（）.
A．过敏性
B．失血浆性
C．出血性
D．感染性
E．心源性
参考答案：B
有关挤压伤的叙述，错误的是（）
A.伤处有广泛的组织破坏
B.重物挤压人体某一肌肉丰富部位所致
C.常有局部明显肿胀，甚至静脉回流障碍
D.有大量的红细胞破坏
E.可并发休克和急性肾衰竭
He _____ his parents that he has failed in the exam.
A．dares not tell
B．dares not telling
C．dare not tell
D．dares not to tell
He _____ his parents that he has failed in the exam.