We are             the same class.

35.69x-30=40____35.43x-29.8=53.7

根据短文内容, 回答下列问题。

    It is August 2050. Mrs Peng and Mr Yu are writing about hotels and houses on their posts.

    The Hotel Whale

    The Hotel Whale is built (A) 在水下. It is in the shape of a whale. This hotel has 50 bedrooms, a cafe and a shopping centre.

    Mrs Peng: "When we were staying at the hotel recently, my children watched the fish outside their bedroom window. (B)They were never bored."

Forever Green Houses

    These houses are both "green'' and "smart". There is glass outside the houses. Heat is held under the glass and is then used as energy for(C) each house. In the bathroom. Your medicine cupboard is connected to your doctor's computer. In the kitchen, your smart fridge tells the supermarket's computer when you (D)need more food.

    Mr Yu: "When we were living in our old house, we were using more energy. J would certainly recommend Forever Green Houses to my friends. (E)They will satisfy everyone.''

节日期间的商场里顾客很多，有人会感觉到闷热缺氧，测定出氧气的体积分数可能是（  ）