男性,30岁。尿频、尿急、尿痛伴间歇性血尿1年余,多种抗生素治疗无明显效果。首先应考虑()。
A.慢性膀胱炎
B.膀胱结石
C.肾结核
D.慢性肾盂肾炎
E.慢性前列腺炎
参考答案:C
I will never understand how it________that you were an hour late on such a short journey.[ ]
A.came over
B.came out
C.came up
D.came about
乙二胺四乙酸,EDTA及H4Y()一种物质。
A.不是
B.是