* * 结石的最主要症状是()。
A.排尿困难
B.尿痛
C.尿频、尿急
D.急性尿潴留
E.血尿
参考答案:A
解析:[知识点] 泌尿系结石病人的临床表现
Fire swept through a store at the corner of 4th street this morning ________ heavy damage.
A.caused
B.has caused
C.causing
D.to cause