成本-效果分析的表示方法包括()或()。
参考答案:成本效果C/E;增量效率ΔC/ΔE
–Can you tell me the way_____ the bank?
–Turn left _______ the second crossing.
A.to; at
B.to; to
C.at; at
D.at; to
He invited me to a dance after the show_______Christmas Eve.
A.at
B.on
C.in
D.by