波状热最常见的疾病是（）
A.霍奇金病
B.重症肺结核
C.疟疾
D.伤寒
E.布氏杆菌病
参考答案：E
阑尾动脉发自
A．肠系膜上动脉B．肠系膜下动脉C．右结肠动脉D．回结肠动脉E．左结肠动脉
—Does Dan like onions?
—Yes, ________. He thinks they are healthy. [ ]
A. he is
B. he does
C. he doesn't
