销售代表应该懂得（）客户做最后购买的决定，但整个过程要显得自然、流畅。
参考答案：适时要求
— What's the matter with Jane? She has been sitting there for hours.
— A letter from her mother _____ an attack of home sickness in her. [ ]
A. set out
B. set off
C. sent off
D. sent up
某公司认股权证的市价为3.50元，每手认股权证为100张，若甲用一手认股权证换购500股普通股，每股普通股的认股价是8.5元，其行使价格为（）元。
A．8.50
B．9.20
C．10.50
D．12.20
