past habits

We used annual surveys of smoking habits from 1954 to 1992, and individual lifetime smoking histories collected in 1965 from a population sample born 1893–1927.

Introduction

My name is Sissy. I'm 18 years old.and I am a chinese.I relly love China....
I used to like go shopping,play badminton and paly cards..
Now, I like to travel all around the world....
I am not talkative girl,sometimes shy.but I like make friends...
OK....that's all!