【单选题】My glasses are broken. I will have to buy _____. [ ]
【判断题】抽打蛋泡前加入塔塔粉、柠檬汁、白醋等酸性物质,可以调整pH值,但不能改变蛋清的等电点。
【单选题】Whose is this watch? Is it a __________? [ ]
【简答题】A.Secondhand and small one. B.Secondhand and large one. C.New and small one. D.New and large one.