下列选项中，不属于常用的内墙涂料的是( )。
A．合成树脂乳液内墙涂料(乳胶漆) B．溶剂型内墙涂料C．幻彩涂料 D．复层建筑涂料
参考答案：D
Though ________ to see us, the professor gave us a warm welcome. [ ]
A. was surprised
B. surprise
C. being surprised
D. surprised
车门锁是为了防止车辆因受到（）和（）而使车门轻易打开。
