Dear Benny,

I’m very sorry I don’t have much time to write to you often. I am always b　　　  at school. I usually

s__　　　  two hours a day playing football. Football is my favorite . It’s important to k _______

healthy.

Next week, I’m coming to Nanjing with my p　　　　  . I will stay there with them for 2 weeks, I’m very excited, because it will be my first t　　　　  to be in China. I really want to learn some C_______ though(虽然) I hear it is d　　  for a foreigner(外国人) to learn it well. I a         _ want to see old buildings and

e              traditional food in China. Will you tell me some interesting p________to visit? I am looking forward to your letter.

接种百白破三联制剂下列哪项是错误的（）

A.出生三个月初种

B.基础免疫需3次

C.接种方法为皮下注射

D.只需在7岁加强注射一次

E.初种剂量0.2～0.5ml