【判断题】趋势分析和散点分析都假定生产率在各年都保持不变。
【单选题】He commanded that the student _____the classroom before he returned.
【单选题】______, we decided to leave at once, as we didn't want to risk missing the bus.
A.
As it being pretty late
C.
It was being pretty late
【单选题】He ______ the key, so we ______ into the office.
B.
didn’t leave; couldn’t have got
C.
hadn’t left; couldn’t get
D.
hasn’t left; couldn’t get
【单选题】We didn’t look after the old woman ____ we had an important meeting yesterday. [ ]
【简答题】__________, we decided to leave at once, as we didn't want to risk missing the bus. A. As it being pretty late B, It being pretty late C. It was being pretty late D. Being pretty late
【简答题】进入大气装置创建面板的方法是:单击创建面板上的 _______ 按钮,单击标准下拉列表,选择大气装置选项。