题型:问答题 简答题 — These foreigners have been to Tibet before. — Really? When _____ there?[ ]A. will they go B. did they go C. have they gone 查看答案
题型:问答题 简答题 正值国际油市阴晴不定之际,沙特阿拉伯和()两大主要产油国2月23日先后抛出“不减产”和“继续增产”的言论,令国际油价再受重挫。当天,3月交割的美国西得克萨斯轻质原油价格和4月交割的布伦特原油价格跌幅均超过4%,创近期新低。A.荷兰B.伊朗C.美国D.迪拜 查看答案