证券公司应当按上一年营业费用总额的( )计算营运风险的风险准备。
A.5%
B.10%
C.15%
D.20%
参考答案:B
男性,26岁,间歇下腹痛,腹泻2年,右下腹包块半年。X线钡餐示:回肠下段肠腔窄,肠壁僵硬,大便潜血(+)
诊断首选()。
A.盲肠癌
B.肠结核
C.淋巴瘤
D.淋巴肉芽肿
E.Crohn病
I should not have laughed if I ______ you were serious.
A.thought
B.would think
C.had thought
D.have thought