【简答题】某黄土样,称干土质量为123.54g,要制备含水量为17.5%的土,需加水()g。
【单选题】—Are these pens ? —Yes, _____. [ ]
【多选题】关于当需求增加且供给减少时的表现,表述不正确的是( )。
【单选题】单项选择。 In the tree many birds. [ ]
【单选题】One of the boys_____ a black hat. A have B there is C there are D has
【单选题】________ some sports news in today's newspaper. [ ]
【单选题】当需求增加而供给减少时,对均衡的影响是:
【多选题】关于当需求增加且供给减少时的表现,表述正确的是( )。
【单选题】____ a lot of books for your classmates next term?