下列对肺换气的描述正确的是（）
A.肺与外界气体交换
B.肺泡与血液气体交换
C.血液与组织液间的气体交换
D.组织液与细胞间的气体交换
参考答案：B
I don't think there is ________ in today's newspaper.
A．interesting something
B．something interesting
C．interesting anything
D．anything interesting
— Hi, Jane. What time do you get up _____ weekdays?
— I usually get up _____ about six o'clock. [ ]
A.in; at
B.on; at
C.at; at
D.on; on
