BBC 6 Minute English - Why did Singapore ban gum?

source: Chau Pham     2017年6月8日
This week's question
When did the Singapore government outlaw chewing gum?
a) 1982
b) 1992
c) 2002
Listen to the programme to find out the answer.

antisocial: not caring about other people and society in general
to outlaw something: make it illegal
resin: a sticky substance produced by trees
approachable: friendly and easy to talk to
chemical bond: a situation where one thing is joined firmly with another.
labour-intensive: involves a lot of people to do something
two of a kind: very similar
degrades: breaks down into smaller pieces over time
pellet: small round ball of something that has become hard