【简答题】After being rescued from the air crash, the people agreed that they had much to ________. A) thank B) be thanked C) be thankful D) be thankful for
【简答题】Investigators are trying to the causes of the air crash .
【判断题】建立冗余数据最常用的技术是数据转储和登录日志文件。
【单选题】At least 150 people are believed______in the air crash.
【简答题】The journalist kept on (post) the latest news on the Internet to report what was going on in the incident of the air crash.
【简答题】革兰氏阳性细菌细胞壁的成份主要包括 __ __ 、 __ ____ 。