摘解制动软管
参考答案：在摘车前，关闭机车与车辆或车辆与车辆之间的折角塞门并摘开两个制动软管的作业过程。
从方框中选择恰当的句子完成对话，其中有一项是多余的。（每题1分，共5分）
A: Is this a photo of your family?
B: Yes, it is.
A : 小题1:
B: Yes. She is my sister, Kate.
A: Where are you ?
B: Look at that boy! 小题2:
A: 小题3:
B: Yes, they are. I love my parents.
A: 小题4:
B: It’s my dog. 小题5:
In The Principles of Language Study (1921), Palmer put forward nine fundamental principles of good language teaching and learning, of which ______ was the first and most important.
A．reinforcement and response
B．habit-formation
C．form and meaning
D．meaning and situation
