肛管及肛门周围恶性肿瘤中,最常见的是()
A.鳞癌
B.基底细胞癌
C.恶性黑色素瘤
D.一穴肛原癌
E.肛周Paget病
参考答案:A
解析:鳞癌占肛管及肛周癌的50%~75%,最常见。
在下列各种情形中,甲构成不当得利的是( )。
A.某城市修建地铁.地铁附近居民甲的房屋大幅升值B.甲、乙之间订有买卖合同,价款为8000元,甲将价值5000元的带有瑕疵的标的物卖给乙C.甲在赌场参加赌博,乙输给甲5000元,并当场支付给甲D.甲到某超市购物,付款时由于收银员的疏忽,致使一件价值500元的商品未付款
— I'm sorry. I _____ at you the other day.
— Forget it. I was a bit out of control myself. [ ]
A. shouldn't shout
B. shouldn't have shouted
C. mustn't shout
D. mustn't have shouted