学校大门朝南开,大门正对着教学楼,教学楼在大门的[ ]
A.东面
B.西面
C.北面
D.南面
答案:C
Do you notice the man ______ is sitting under the tree? He is our new teacher.
A. that B. who C. whom
Ⅱ型呼吸衰竭CO2潴留的原因是:()
A.通气/血流比例失调
B.通气功能障碍
C.弥散功能障碍
D.肺动-静脉样分流