关于膈的叙述不正确的是( )
A.膈主要是由肌肉组织构成的
B.膈是胸腔和腹腔的分隔线
C.膈是胸腔的顶部,腹腔的底部
D.膈的收缩和舒张可引起胸腔容积的变化
答案:C
Woman: If the weather is this hot tomorrow, we may as well give up the idea of playing tennis in the afternoon.Man: Oh, I don't think it'll last long. The weather forecast says it will cloud over by midafternoon.Question: What does the man mean
A.Weather forecasts are not reliable.
B.They'd better change their mind.
C.The tennis game won't last long.
D.They shouldn't change their plan.
《中华人民共和国节约能源法》把节约资源作为我国的基本国策,规定了国家实施()的能源发展战略。
A.节约优先、多元发展,把节约放在首位
B.节约与开发并举,把节约放在首位
C.节约优先、结构调整,把节约放在首位
D.节约与开发并举,结构调整,把节约放在首位