Vocabulary DevelopmentScan the following passages and find the words or phrases that have roughly the same meanings as those given in the brackets.Paragraph 1. As the Sudan’s Arabic-speaking northerners and black African southerners come close to signing a peace accord after a long running civil war, what language to speak in the center of the country is one of the obstacles to a deal.1.a hindrance______
【正确答案】：obstacle
【题目解析】：P230
