题目

如图所示，瓶内有一些水，用带孔的橡皮塞把瓶口塞住，向瓶内打气一会儿后，瓶塞跳起，在瓶塞跳起的过程中，下列关于瓶内气体说法正确的是（? ）A．气体对瓶塞做功，气体的内能减少B．瓶塞对气体做功，气体的内能减少C．气体对瓶塞做功，气体的内能增加D．瓶塞对气体做功，气体的内能增加 按照要求变换句型： 1.  We have some tennis balls. (改成一般疑问句) __________ you have __________ tennis balls? 2.  There are some teachers in the reading room.  （改否定句） There _______ _______ teachers in the reading room. 3.  Climb the tree in the park. (改成否定句) __________ __________  the tree in the park. 4.  The kite is in the tree. (对划线部分提问) __________          the kite? 5.  The model plane is Nick and Peter’s. (对划线部分提问) __________ __________  the model plane? 6.  He gets up at seven every day.（画线提问）_______ ______ does he get up every day? 7.  There is only one English book in my bag.  （对画线部分提问） _____  _______ English books are there in your bag? 8.  I have a walkman. He has a walkman, too. (同义转换) I have a walkman. He _________ __________ a walkman. 9.  There are sixteen boys and fourteen girls in my class. （同义句） We        _________  students in my class. 10.  The dog isn’t happy today.  （同义句）The dog ________           today.