Though science is often imagined as a disinterested subject, scientists are no different from anyone else: they are ______ human beings enmeshed (陷入:卷入) in a web of personal and social circumstances.
A. vulnerable B. rational C. careless D. passionate

在IMO采纳的分道通航水域，下列说法正确的是：（）

Ⅰ、船舶应避免在分道通航制水域的端部附近锚泊

Ⅱ、船舶航行在分道通航制水域端部附近时应特别谨慎地驾驶

Ⅲ、在分道通航制水域端部附近航行时应充分地考虑到直航船可能改变航向

A.Ⅰ

B.Ⅰ、Ⅱ

C.Ⅱ、Ⅲ

D.Ⅰ、Ⅱ、Ⅲ