【判断题】若一个行列式中某行上的元素全为零,则该行列式的值一定为零。
【单选题】_______I have been only at college for two days, I have learnt a lot of new things.
【简答题】I have been only at college for two days. I have learnt a lot of new things. (使用 even though 或 although 改写为一个句子)
【单选题】听力原文:WOMAN: How long have you been a tree-climber, Mr Saw? MAN: I have been a tree surgeon and qualified tree-climber for the last 30 years. WOMAN: How did you start? MAN: I was encouraged to climb tr...
C.
When he was 30 years old.
D.
When he was 14 years old.
【简答题】I have been only at college for two days, and I have learnt a lot of new things.
【单选题】发生漏损事故后,为减少进水量,应立即停车并将破损部位置于:()
【判断题】句子I seem to have been only like a boy playing on the seashore.是个SVO句型。
【单选题】— Have you taught English for a long time? — Well, I have only been a teacher _____ 5 years ago. [ ]
【单选题】The manager insisted that I _______ a raise though I have been in this company for only six months.
【单选题】I have been away only for three years,_____ I can hardly recognize my hometown.