新疆出血热与汉坦病毒的相同点是
A.结构与培养特性
B.生物学特性
C.致病性
D.抗原性
E.传播媒介
参考答案:A
—Did you go to the countryside yesterday?
—______. I went to the park.[ ]
A. Yes, I do
B. No, I didn't
C. Yes, I don't
D. Yes, I did
根据我国《合同法》规定,债权人领取提存之日起( )年内不行使而自行消灭。
A.1
B.2
C.3
D.5