题型:选择题 沙特阿拉伯是我国重要的石油供应国,从沙特运往我国的石油,沿途需要经过的海峡是:①霍尔木兹海峡、②直布罗陀海峡、③黑海海峡、④马六甲海峡 [ ]A、①② B、②③ C、③④ D、①④ 查看答案
题型:选择题 An unhappy childhood may have some negative effects on a person's character; however, they are not always _____. [ ]A. practical B. avoidable C. permanent D. beneficial 查看答案