根据句意及首字母提示填空,完成下列句子。

1. B_____Lily and Lucy are outgoing. They have lots of friends.

2. Edison showed great i______ in science when he was a little boy.

3. Nina went to school t ______she didn't feel very well today.

4. I'm d______from Rick. He is a little calmer than I.

5. It's not polite (礼貌的) to l______ at others when they make mistakes (错误).

快满50周岁某人在过去的7年间，献血总量已达5600ml。如果身体一直保持健康状态，他满55周岁以前，还可争取无偿献血（）

A.111次

B.17次

C.18次

D.10次

E.9次