保险费率是______。
A.保险费与保险金额的比例 B.保险金额与保险费的比例C.赔偿金额与保险金额的比例 D.给付保险金的费率
参考答案:A
阅读理解。
1.Lin Yang: I know Yao Ming. He is great. I want to play sports with my friends.
But we don't have soccer balls, basketballs or volleyballs.
2.Liu Mei: It's very cold here, but I have only an old sweater. It's my mother's. I
need new clothes.
3.Wang Li and Wang Xia: We are sisters. We don't have a clock in our home.
We don't know the time to go to school. We don't want to be late for school.
4.Zheng Lei: Our teachers tell us, books are our friends. I want to read many books.
5.Dai Xu: My shoes are broken. My parents can't afford a new pair of shoes.
抗坏血酸结构中特有的官能团是().
A.C17-α-醇酮基
B.酚羟基
C.二烯醇基
D.吡啶环
E.β-内酰胺环