1. 网络类话题
Online shopping/payment/learning
Ordering food online
E-book, paper book
Smart phone or computer usage
Different way of getting information/communication
素材：
1)technological innovation and advance, people have easyaccess to internet.
2) it is convenient, swift and efficient to do sth online
3) … can provide us with various choices
2. 运动健康类话题
Average time of doing sports
The number of over-weighted people
Diet structure
Subhealth/mental health
素材：
ØExcessivepressure from career. They are facing fierce competition.
ØHeavy burdenfrom family because they have to take care of the young and support the old.
ØLack ofhealthy lifestyle
ØIt isconvenient, swift and money-saving to so sth.
ØTheimprovement of living standard. People have enough money to so sth .
3. 环境类话题
Means oftransportation
Global warming-up
Plastic bags/paper bags
素材：
ØTheimprovement of notion of protecting environment/low-carbon life
ØThe governmentissued related laws and regulations to limit sth
ØIt isconvenient to take public transportation because we may suffer from trafficcongestion if we drive cars.
ØBoomingindustry, Deforestation
ØThe energy andresource are limited.
4. 大学生生活类话题
The number of returnees/ exchange students
The number of students studying abroad
The number of foreign students studying in China
素材：
ØSocial andeconomic development in China
ØIt can providethem with more opportunities.
ØThey can opentheir horizon and enlarge their knowledge by studying aboard.
ØTraditionalculture is rather appealing to them, like Peking Opera, Chinese Kongfu.
ØOur governmentoffers them financial support.