1755年在颐和园的昆明湖东畔用铜铸造的铜牛像的象征作用是（）？
A.镇鬼驱邪
B. * * 水患
C.权力象征
参考答案：B
The detective, ______ to be reading a newspaper, glanced at the man_____ next to a woman.
A．pretending, seated
B．pretended, seated
C．pretending, seat
D．pretended, seating
增加下列因素不会加大增感屏光扩散的是
A．荧光体颗粒 B．荧光体涂布厚度C．保护层厚度 D．反射层的反射效率E．显影液的浓度
