根据《合同法》的规定，债权人领取提存物的权利期限为( )年。
A．5B．3C．2D．1
参考答案：A
下列各项中，哪项是慢性胃炎的主要病因（）
A.遗传因素
B.胃酸分泌过多
C.应激和心理因素
D.H.Pylori感染
E.吸烟
用所给词的适当形式填空。
1. The book is very _____ (interest)
2. Although they're twins,there're some _____ (different) between them.
3. I have some important _____ (information) to tell you.
