It’s time ______ school.[ ] A. go to B. 发布时间:2017-03-24 17:59 │ 来源:www.tikuol.com 题型:选择题 问题: It’s time ______ school. [ ]A. go to B. go C. to go D. to go to
题型:选择题 To complete the project as planned, the workers were busy working all day, only ______ a short rest once in a while.A.to takeB.to have takenC.having takenD.taking 查看答案
题型:选择题 水平传输装置如图所示,在载物台左端给物块一个初速度.当它通过如图方向转动的传输带所用时间t1.当皮带轮改为与图示相反的方向传输时,通过传输带的时间为t2.当皮带轮不转动时,通过传输带的时间为t3,则( )A.t1一定小于t2B.t2>t3>t1C.可能有t3=t2=t1D.一定有t1=t2<t3 查看答案