853.CT扫描示"肾静脉内栓子形成"，则可除外（）
A.慢性肾盂肾炎
B.慢性肾小球肾炎
C.婴儿腹泻
D.肾细胞癌
E.高胱氨酸尿症
参考答案：E
.
--- I hear you__________at Smith’s.
--- Yes, I__________there for about three months.
A．work; had been working
B．worked; was working
C．are working; have been working
D．worked; have worked
纵波
