Liberal Studies (通識科) 必須用英文作答!!! 急問！

According to the Census Department,

1) the latest population of Tuen Mun is 495,400 (2005)

2) 15-64 is the largest age group comprise of 74.2 % of total district population (2001)

3) the median income is $14,200 (2006)

4) industry sector most ppl engaged in is wholesale, retail, import and export trades, restaurant and hotels (2006)