头发突然成片脱落,脱发区头皮光滑而亮,为()
A.油风
B.白秃疮
C.白屑风
D.肥疮
E.面游风
参考答案:A
Unscramble the sentences and questions.
A: see the let's elephants. Let's see the elephants. B: like do you why elephants? (1) A: friendly very because are they. (2) B: they from are where? (3) A: from Africa are they. (4)
下列关于直肠癌的叙述,错误的是
A.直肠癌的发病率在大肠癌中仅次于乙状结肠癌
B.溃疡型癌约占直肠癌全部类型的1/2以上
C.绝大多数癌肿行直肠指检可触及
D.低位直肠癌约占直肠癌的2/3~3/4