“遣唐使”、“玄奘西行”、“鉴真东渡”等客观史实，反映出唐朝的时代特征是（ ）
A：政治清明
B：经济繁荣
C：对外开放
D：交通发达
—Sorry, but that's the _______ one.
——She's seldom asked to do housework at home, she?—— . Her parents are very busy with their work, so she has to do the laundry every day.
某顾客到商场买照相机，把货架上的机子几乎都试了一遍，觉得还是不满意，要求售货员带他到仓库去挑。面对这过分的要求，售货员的回答最得体的一项是（ ）
