司机在起落吊具时，执行好（）的原则。
A、两头快、中间慢
B、两头慢、中间快
C、最高速
D、最低速
参考答案：B
Sandy didn't tell her parents that she was going home because she wanted to give them a _______. [ ]
A. gift
B. call
C. surprise
D. note
公司的盈利来自销售收入，销售收入增加，股价都会随之上涨。( )
