以下哪一项属于科学踏入人文文化领域的过程:()
A、从创造到怀疑到选择
B、从怀疑到选择到创造
C、从选择到创造到怀疑
D、从怀疑到创造到选择
参考答案:B
– Kim, I’ll go to the park with my parents today.
-- .
A.It is not a good day
B.I don't’ want to go there
C.Have a good time
D.Come back early
理想的肺通气/血流比值应为()。
A.1.0
B.0.9
C.0.82
D.0.75
E.0.70