【单选题】I’ve taken driving lessons ______ last month.
【判断题】混和色泽相差比较大的药物时,应采用套色法混和。
【单选题】听力原文:Weren't the pictures taken in color? (A) Someone must've taken them. (B) No, I used black and white film. (C) I'll take the purple and green one. (29)
【判断题】南京城墙是我国现存最大型的、保存完整的城墙。