According to the research, young people are much more polite than other age groups.
查看答案
Citizens in Zagreb did the best job in helping to pick up the dropped paper.
A. 对
B. 错
The politeness in stores is partly out of the purpose to keep the customer.
A. 对
B. 错
下列糖属于多糖的是
A. 半乳糖
B. 蔗糖
C. 透明质酸
D. 果糖
可用于糖或苷类薄层显色的是
A. Molish反应
B. 苯胺-邻苯二甲酸试剂
C. 菲林试剂
D. 多伦反应
微信支付 
支付宝支付