下列选项中，属于导游服务的经济作用的表现形式有（）。
A.直接创收
B.促销商品
C.节约开支
D.促进交流
参考答案：A, B, D
Poor Tim! He had his pocket ________on his way to the theatre. So he had to give up his favourite play.
A．robbed
B．cheated
C．picked
D．stolen
诊断败血症最重要和确定的依据是（）
A.畏寒发热，严重中毒症状
B.皮疹
C.肝、脾大
D.白细胞总数和中性粒细胞显著增高
E.血和（或）骨髓培养阳性
