伤科七味片的临床中毒表现为（）
A.脉缓慢无力
B.发生典型的士的宁惊厥症状
C.瞳孔扩张
D.面色苍白
E.口中有金属味
参考答案：B
The fact suggested that the water _______ and to prevent this from happening again, John Snow
suggested that the source of all the water supplies ______.[ ]
A. should blame; should be examined
B. was to blame; be examined
C. was blamed; were examined
D. was to be blamed; should examine
