题型:问答题 简答题 两架轧钢机同时工作8小时,轧出一定数量的钢板.若单用其中第一架轧钢机轧出同样数量的钢板,要比单用第二架轧钢机轧出同样数量的钢板多用3.6小时,求每架轧出这些钢板所需的时间. 查看答案
题型:问答题 简答题 Tom got all A's _____ he spent most of his time studying. [ ]A. if B. before C. becauseD. although 查看答案