【单选题】How often should the beans be watered a day?
【单选题】The doctor suggested that this kind of medicine__four times per day.
D.
should been have taking
【单选题】以测者午圈为起点,沿天赤道向东量到天体时圈为止的量法称为:
【单选题】《导游服务质量》国家标准是于( )年制定的。
【判断题】水同其它物质一样,受热时体积增大,密度增大。
【单选题】以测者午圈为起点,沿天赤道向东量到天体时圈为止的量法称为()。