外界空气与血液进行气体交换的场所是_______，一个人的肺的吸气于呼气能力可以用测定________来衡量。
肺，胸围差
Giving up my job to go back to full-time education was a big __________, but now I know it was the best decision I ever made.
A．project
B．commitment
C．competition
D．ambition
“十一五”期间，培育的一批创新型企业中不包括( )。
A．具有自主知识产权
B．自主品牌
C．持续创新能力
D．延续了旧观点
