膀胱癌最常见的组织类型是
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
参考答案：E
每小时行65千米可写成______，每秒行45万千米可以写成______．
－ Let's go to the lecture on International Trade this evening.
－ That's great. I'll ______ you at 6:30. [ ]
A. call up
B. call to
C. call on
D. call for
