在地表的风向稍微不同于地表之上几千英尺高度的风向的原因是（）
A.当地地形影响气压
B.地面有较强的地转偏向力
C.风和地面之间的磨擦作用
参考答案：C
Only after _____ did people know it was not an accident, but an attack of some kind.[ ]
A. the second tower of the World Trade Centre was hit
B. did the second tower of the World Trade Centre fall
C. was the second tower of the World Trade Centre hit
D. the second tower of the World Trade Centre was fallen
某企业当年的工资总额为4000 万元，根据相关的税收优惠安排，该公司为员工安排补充养老保险和补充医疗保险时，可记入成本的费用额度分别是（ ）
A．80 万元和80 万元
B．80 万元和120 万元
C．160 万元和160 万元
D．120 万元和200万元
ly after _____ did people know it was not an accident, but an attack of some kind.[ ]
ond tower of the World Trade Centre was fallen