题目

量取8.5ml的液体，应选用下列仪器中的 ( )①药匙 ②5ml量筒③10ml量筒 ④50ml量筒⑤胶头滴管 A . ③ ⑤ B . ③ C . ① ⑤ D . ② ⑤ 答案：A －________ can you finish this English examination? －In about one and a half hours． [　　] A．How far B．How often C．How soon D．How long