数3.949 ×105精确到万位约 [ ]
A.4.0 万
B.39 万
C.3.95×105
D.4.0 ×105
答案：B
—____________________________?
—It’s Wednesday.
A．What’s the day
B．What’s the time
C．What day is it today?
D．What’s the date today?
加油站员工应掌握的基本知识有什么？
