B亚型血很易误判为 __________ 型。
参考答案：O
You might wonder how this kind of animal ____ to live without eating for so many months.
[ ]
A. keeps
B. succeeds
C. manages
D. tries
具有凉血止血作用的药物是（）。
A.大蓟
B.小蓟
C.地榆
D.槐花
E.侧柏叶
