助理值班员发现客车车辆剧烈振动，危及行车安全时，须立即通知（）采取停车措施。
参考答案：司机
—Did you see Mr. Smith when you were in France?
—No, when I _______ France, he had gone to China. [ ]
A. had arrived to
B. arrived to
C. had got to
D. got to
建筑工程信息模型精细度分为（）个等级。
A、3
B、4
C、5
D、6
