【单选题】Passenger pigeons( 旅鸽 ) once flew over much of the United States in unbelievable numbers. Written accounts from the 18th and 19th centuries described flocks( 群 ) so large that they darkened the sky fo...
【简答题】They calculated that the cost of equipping the new hospital would probably be $2 million. (estimate) The cost of equipping the new hospital __________ at $2 million.
【简答题】Passenger pigeons ( 旅鸽 ) once flew over much of the United States in unbelievable numbers...described flocks ( 群 ) so large that they darkened the sky for hours. It was calculated that when its popula...
【简答题】用相近的英语表达替换第一句话中划线部分的内容,使得两句话语意保持一致: They calculated that the cost of equipping the new hospital would probably be $2 million. The cost of equipping the new hospital __________ at $2 million.