Virtual items may produce powerful word of mouth when______.
A．they can be traded for real dollars
B．they are not viewed as important objects
C．they can confer social importance on its users
D．they are readily available

判断题学生身体领域发展目标，本质上是学生的身体发育和增强体质。()

单项选择题中国社会保障制度最主要的特征是()

未分类题The text intends to tell us______.A．how to unlock the potential of social networksB．how to read people's online activitiesC．how to create authentic marketingD．how to explore the attractiveness of virtual items

判断题托兰斯创造思维测验分为甲、乙两式，甲为图形思维创造测验，乙为语文创造死思维测验。()

未分类题By examining popular songs of last five decades, the two researchers aim to see______.A．why people's music preferences are diversifiedB．how tempo and mode of music have changedC．what kinds of music are most appealing nowD．how changes in music mirror our moods and views