单选题We can learn that, while visiting the Thi-Lor-Su waterfall, visitors ______.A are rewarded for taking garbage awayB are forbidden to take packaged food and drinksC are punished heavily if they throw garbage carelesslyD are prevented from taking a vehic
题目
单选题
We can learn that, while visiting the Thi-Lor-Su waterfall, visitors ______.
A
are rewarded for taking garbage away
B
are forbidden to take packaged food and drinks
C
are punished heavily if they throw garbage carelessly
D
are prevented from taking a vehicle even if they are tired