爆炸的破坏性作用的主要表现为()
A、引起火灾
B、形成高温高压高能量的波状气压,即冲击波
C、碎片冲击
D、震荡作用
E、造成二次事故
参考答案:B, C, D, E
________ the help of her teacher, Mary ________ in the past few months.
A.With; has made progress
B.Under; has made a progress
C.With; had made progress
D.Under; had made a progress
焦虑性神经症简称焦虑症,是以广泛和持续性焦虑或反复发作的惊恐不安为主要特征的神经症性障碍。