高等继续教育 / 护理英语II
正确率:100%
题型描述: 单选题
Lungs become less ( ) and do not expand either when people are old so that less oxygen gets into them.
A.elastic
B.pump
C.exchaning
D.release
Lungs become less ( ) and do not expand either when people are old so that less oxygen gets into them.
A.elastic
B.pump
C.exchaning
D.release
参考答案: