A guide should have meals with the driver because the driver may feel lonely when he has dinner himself.
查看答案
Tourists could choose to take snacks in any restaurants they like.
A. 对
B. 错
It is up to members of tour group whether they have dinner together.
A. 对
B. 错
The guide is held responsible if tourists are not satisfied with the dishes.
A. 对
B. 错
主要用于生产薄膜和大棚膜的是（ ）
A. LDPE
B. HDPE
C. PMMA
D. UHMWPE
微信支付 
支付宝支付