小车激光测距失效小车会（）
A.急停
B.变成低速运行
C.变成低速运行后停止
参考答案：A
—What class ____ your brother in?
—He ____ in Class Two.
A．does; is
B．is; is
C．are; /
D．are; is
真皮 * * 层
