题目

OUR PROMISE     Making your stay a complete success is our goal．Just let our manager on duty of front—desk staff know if any part of your stay isn’t satisfactory．We promise to make it right or you won’t pay for that part of your stay． FORGET SOMETHING?    If you forget to pack any standard toiletry item（tooth brush，toothpaste，shaving cream，razor or comb），just call the front--desk and we’ll get you a free replacement（替代） right away． PLEASE REUSE T H E TOWELS     We invite you to join with us to save water by using your towels（毛巾）more than once11．四个集气瓶中分别充满了空气、氮气、二氧化碳和氧气，试用简单的方法加以鉴别．