肺换气时气体通过的部位是
A.支气管
B.细支气管
C.肺泡壁
D.肺泡小管
E.呼吸膜
参考答案:E
The bedroom is ____________. They share it.
A.Tom’s and Tim
B.Tom and Tim’s
C.Tom and Tim
D.Tom’s and Tim’s
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