慢性肝病PT时间延长与何种维生素缺乏有关:()
A.维生素D
B.维生素B
C.维生素K
D.维生素C
参考答案:C
(2013·湖北武汉武昌区高三联考)One way to ________ species under threat of extinction—whatever the cause—is to remove them to zoos or parks and feed them there.
A.betray
B.resist
C.preserve
D.abandon
主通调水道的脏器是()
A.肝
B.心
C.脾
D.肺
E.肾