公元208年,孙刘联军以少胜多大败曹操的战役是 [ ]
A、牧野之战
B、官渡之战
C、赤壁之战
D、淝水之战
答案:C
—Have you ever been to New York before?
—No. This is my first ______.
A.call
B.vacation
C.visit
D.show
岩石的抗压强度