在国际毒潮的影响下,我省毒品问题依然严峻复杂,呈现出哪些特点?()
A、毒品来源多元化
B、毒品种类多样化
C、毒品贩运隐蔽化
D、毒品滥用扩大化
参考答案:A, B, C, D
关于张力性气胸,哪项错误()。
A.常继发于慢性阻塞性肺疾病或肺结核
B.胸腔压力超过大气压
C.可使纵隔严重移位,影响心脏血液回流
D.必须紧急抽气减压
E.一般抽气减压后,胸腔内压力不再上升
单句改错.
1. lt is snow right now. ( )
A B C D
2. It's cold in the morning but turn warm at noon. ( )
3. It's hot in day and cold at night. ( )
A B C
4. There are lots of money in the bank. ( )
5. Right now, they play happily here. ( )