搜索引擎(SearchEngines)是一个对互联网上的信息资源进行收集与整理,然后 发布时间:2018-02-03 18:22 │ 来源:www.tikuol.com 题型:单项选择题 问题: 搜索引擎(SearchEngines)是一个对互联网上的信息资源进行收集与整理,然后供人们()的系统。A.查询B.搜索C.整理D.修改
题型:单项选择题 任务型阅读。阅读短文,根据其内容完成表格。People in the United States have a national vacation on Monday in most months. So people may have a vacation on Saturday, Sunday and Monday. During the vacation, people can rest, go to interesting places or do some other things with their families. There are three great days in the United States. They are New Year’s Day, Christmas Day and Thanksgiving Day. During the days, most businesses close. People can stay at home and have fun with their families. People in the United States usually have more than 2 weeks of paid vacation(带薪休假) anytime in a year. This usually depends on how long people have been working or what their jobs are. Usually the more time they spend working, the more time they may get for vacation.VacationWhenWhat to doA national vacationSaturday, Sunday and (66) ____________People can (67) ____________, gosightseeing or do some other things.Three great daysNew Year’s Day, Christmas Day and (68) ____________People can stay at home and (69)____________ with their families.Paid vacationMore than (70) ____________ days anytimein a yearPeople can have a long journey. 查看答案
题型:单项选择题 在牛顿环实验中,当透镜与玻璃之间充以某种液体时,第10个明环的直径由1.40×10-2m变为1.27×10-2m,则这种液体的折射率为()。A.n=1.22B.n=1.33C.n=1.52D.n=1.00 查看答案