单项选择题
使用准纳器前，尽量呼出肺内空气，呼气时可以对着准纳器吸嘴
未知题型使用准纳器前，尽量呼出肺内空气，呼气时可以对着准纳器吸嘴
以下各项不属项目特点的是（）A.有始有终B．临时性C．重复性D．独特性
单项选择题以下各项不属项目特点的是（）
In CLT, the writing skill has been expanded to focus on...
未知题型In CLT, the writing skill has been expanded to focus on its grammar goals. Students should have the chance to write to express their own feeling or describe their own experiences.
