Translate the following sentences in to English or Chinese: 1. 请问这是海关吗?我去澳大利亚旅行,该办哪些手续? 2. 看来商务机票是最恰当的选择,因为它有较大的弹性。 3. 我能在酒店兑换一些钱吗 ? 我想把一些美元兑换成当地货币。今天的兑换率是多少 ? 4. My secretary made a reservation ten days ago in the name of John Smith. She sent a fax to your hotel to reserve a suit of two rooms for three nights. 5. We would like to book a conference room that can accommodate 80 to 90 people, with sound equipment, overhand boards or screen and it should be also equipped with a television set and a video recorder. 2. Presentation Make a short presentation on one of the following topics. Before making the presentation, you should take two minutes to write an outline of your presentation. (上传文本以及音频) 1). Describe a business trip you have been on. 2). How would you compare going on a business trip to taking a vacation? 3). How to make arrangements for international business trip? 4). Relevant topics of your own choice 3. 3.3 课堂笔记(拍照上传)