伤寒慢性带菌者常见的带菌部位是（）
A.血液
B.肝脏
C.肾脏
D.胆囊
E.胰腺
参考答案：D
There are lots of things _____ I need to prepare before the trip.[ ]
A. who
B. that
C. whom
D. whose
一般大型水库对当地气候起着哪些影响？
