甲亢引起的腹泻（）
A.渗透性腹泻
B.分泌性腹泻
C.渗出性腹泻
D.功能性腹泻
E.吸收不良引起的腹泻
参考答案：D
The crash was __________ by millions of viewers who were watching the race on TV.[ ]
A. witnessed
B. heard
C. found
D. watched
有关楔状缺损的描述错误的是
A．是慢性缺损
B．多发生在颊侧牙颈部
C．多见于青少年牙的唇、颊面
D．前磨牙多见
E．一般有牙龈退缩
