发绀伴杵状指最常见于（）
A.大量胸腔积液
B.先天性心脏病
C.急性肺部感染
D.化学药品慢性中毒
E.高铁血红蛋白血症
参考答案：B
On a dark night, They made their way to the nearest shelter with strong wind_______ by heavy rain.
A．company
B．accompanying
C．accompanied
D．companion
下列分散系属于胶体的是[ ]
A．淀粉溶液
B．食盐水
C．牛奶
D．碘酒
