问题
单项选择题
肺内压等于大气压是指
A.吸气初和呼气初
B.吸气末和呼气末
C.吸气初和呼气末
D.呼气末和呼气初
E.以上都不是
答案
参考答案:C
肺内压等于大气压是指
A.吸气初和呼气初
B.吸气末和呼气末
C.吸气初和呼气末
D.呼气末和呼气初
E.以上都不是
参考答案:C
补全对话 (共计5小题 每小题1分 共计5分)
Gina: Peter, _小题1:_? Peter: I think a good friend is good at sports. Gina: You mean he or she is athletic? Peter: Yes.And _小题2:_.We can help each other with our school-work. Gina: Anything else? Peter: Er, I think _小题3:_ . Gina: I don't think so.I like to have friends _小题4:_. Peter: Do you think a good friend should be popular at school, too? Gina: Well, _小题5:_ . |