肺癌发病率的男女之比为()

A．1:1

B．2:1

C．2～3:1

D．3～5:1

E．4～6:1

根据汉语完成句子。

1. He _________ in a small village. (出生)

2. The boy _________ for three hours. (打嗝)

3. How old _________ you when you began to go to school? (be)

4. Deng Yaping _________ Olympic Games in 1994. (参加)

5. Mark Twin was an _________ writer. (杰出的)