旅游规划的现实基础是（）。
A.旅游者利益
B.旅游者需求
C.旅游地居民利益
D.旅游地资源
参考答案：D
Mary made coffee ________ her guests were finishing their meal.[ ]
A．so that
B．although
C．while
D．as if
目前最为满意的巴比妥类静脉全麻药是()
A．硫喷妥钠
B．硫戊巴比妥钠
C．甲己炔巴比妥钠
D．环己巴比妥钠
E．甲基硫丁巴比妥钠
