D.the telephones 免费查看参考答案及解析 题目: The girl had hardly rung the bell the door was opened suddenly, and her friends rushed out to greet her. A.before B.until C.as D.since 免费查看参考答案及解析 题目: 30 Bell-LaPadula模型(简称BLP模型)是D.Elpott Bell和Leonard J.LaPa...
There were more than 14 million telephones in the United States by the time Alexander Graham Bell died. For one minute on August 4, 1922, they were all silent. The reason: Bell’s funeral. The American inventor was the first to patent telephone technology in the United States and who foun...