单项选择题

在遮罩层的例子中会出现弹框,但是弹框的位置是( )

A.变化
B.固定不变的
C.向上滑动
D.向下滑动
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问答题

Write an invitation letter according to the information given below.
假定你是李华。你在的学校将在暑假期间举办“澳大利亚文化展览”。请你根据以下要点给澳大利亚朋友Peterson写一封信,请他届时前来给你们做一次讲座。
目的:帮助师生了解澳洲历史与文化;
内容:简要介绍澳大利亚的风土人情;
写信日期:2020年7月5日
日期:8月第一周内任意一天的下午;
时间:3:00---5:00,约两个小时;
                                                                
[填空1]
Dear Peterson,
Our school is planning to hold an Australian culture show this summer vacation. I’m writing to [填空2](邀请你) to give us a lecture about the people and customs on the continent of Australia.     
We would like to get our teachers and students to learn more about your history and culture. You may choose any day of the first week in August and give us the talk that afternoon, starting [填空3](3点开始) and ending at about 5:00pm. I'm[填空4]your reply and we’re sure your talk will be a success.
                                                      [填空5] sincerely,
                                                          Li Hu

答案: 1、July 7, 2020 2、invite you 3、from 3:00 pm 4、looking forw...
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