In my driving lesson, I learned a traffic rule that at no time _____ parked in a manner which will block emergency service.
A：any vehicle is
B：is any vehicle
C：can any vehicle be
D：any vehicle can be
林奈的双命名规定一种生物的学名组成依次是（ ）
下列对课文《与朱元思书》的理解和分析有误的一项是( )
有关酸雨的叙述，不正确的是（ ）
