凡要求单独使用加挂车辆时，按包车办理。包车人应先向承运人提出（）。
A.包车申请报告
B.包车合同
C.全程路程单
D.使用计划书
参考答案：C
Many people in our city _____ the old and the disabled. They offer their seats to them on buses or help
them cross the road.[ ]
A. care for
B. take care
C. agree with
D. take pride in
定型热箱主要由箱体、加热管和（）等组成。
A、回流管
B、隔热体
C、冷凝管
D、加热炉
