膀胱癌常见的组织类型是
A. 非上皮性肿瘤
B. 鳞状细胞癌
C. 腺癌
D. 绒毛膜上皮癌
E. 移行细胞癌
IgA肾病是最常见的原发性肾小球疾病。
A. 对
B. 错
______ you ever ______ to Boston?
A. Have; been
B. Has; been
C. Have; be
Did; been
______ you ______ to Boston last year?
A. Do; go
B. Have; gone
C. Did; go
Did; went