直肠癌的常见发生部位是（）
A.乙状结肠
B.直肠和乙状结肠交界处
C.直肠中部
D.直肠下部
E.肛门
参考答案：B
改错。
( ) 1. Do Jenny help her mother make lunch. ____________
A B C
( ) 2. The yellow pen are Lily's. ____________
( ) 3. He is a good sing. ____________
( ) 4. I'm do my homework now. ____________
( ) 5. I like China music better. ____________
头痛晕沉，腹泻自汗者，属于
A．太阴经
B．少阴经
C．阳明经
D．少阳经
E．厥阴经
