一氧化碳重度中毒的症状会出现恶心、呕吐、腹泻、头痛、眩晕、呼吸困难、虚脱、昏迷等症状（）
参考答案：对
根据对话意思和所给首字母，写出完整正确的单词
Millie: You look w__小题1:______. What’s happening?
Amy: There’s too much homework. I must c__小题2:____ it before I go to
bed . And I always have no time for my h__小题3:____.
Millie: I think you should a____小题4:____ a balance between them. Maybe you
can ask Mr Wu to give you some s___小题5:_____
有关胸内压的叙述，不正确的是
A．一般情况下是负压
B．胸内压-肺内压-肺回缩力
C．使肺维持一定的扩张程度
D．胸内负压有利于静脉回流
E．产生气胸时负压增大
