结肠梗阻最常见的原因是（）。
A.肠蛔虫病
B.肠穿孔
C.肠粘连
D.嵌顿疝
E.结肠肿瘤
参考答案：E
—Is there any particular soup you would like to have?
—_______ you select is all right with me.
A．Whatever
B．Anything
C．No matter what
D．Whichever
下列哪一项不是水痘的临床特点（）
A.发热1~2天后出疹
B.同时可见多种皮疹：斑、丘疹、水疱及结痂
C.皮疹分布以四肢末端为主
D.可累及黏膜
E.疹退后多无瘢痕遗留
