Boats in this area are ________ in order to keep the dolphins safe．
A.prohibited from entering
B.preventing from entering
C.stopped to enter
D.kept from entering into
网友回答
A解析本题考查了“禁止……做某事”的几个表达方法。prohibit…from doing/prevent…from doing/stop…from doing/keep…from doing。enter是及物动词，不和into连用。