病鸡心动迟缓，剖检见心包膜、肝和肾被膜及输尿管浆膜上有大量石灰样物质沉积，该沉积物是（）

A、磷酸盐

B、碳酸盐

C、尿酸盐

D、草酸盐

E、硫酸盐

You will have an accident if you don’t ______, for the road is icy.

A．make out

B．pick out

C．bring out

D．watch out