独立的科学史学科意味着它有了自己的价值标准，有了自己的岗位，促成科学史成为一门独立学科的是乔治·萨顿。
参考答案：对
经济信息化
The major problem with E-mail is that it is (71) easy to use that people can become (72) with messages (73) they can possibly answer in a day. In addition, mail boxes require some management to (74) messages or archive those that might be required later. Senders don’t always know about your E-mail backlog and often send (75) messages.
A. manage B. save C. backupD. dispose of
