对于奢侈品，中国游客的购买力惊人。国人大多注重的是奢侈品的品牌价值和表面效应，许多消费者虽不具备消费奢侈品的富裕条件，却在消费奢侈品，这是一种“小富即奢”心理。“小富即奢”心理主要属于（　　）

水蒸气达到饱和时，水蒸气的压强不再变化，这时(  )

木块在大小为2N的水平拉力作用下，10s内在水平面上沿拉力方向前进1m，木块的平均速度____m/s，拉力做的功为____J。

植物细胞和动物细胞相比，动物细胞没有的结构是____、____、____。

读短文，按要求完成下列各题题。第1题为判断正误；第2、3 题为回答问题；第4题在空白处填入一个单词；第5题为对划线部分英译汉。

    I'm Leo. There is an artist in my family. She is Lisa. Lisa likes drawing a lot. Here are her three drawings (图画).

    There is an animal in the first drawing. It has two big eyes, a big mouth and two small ears. It has long arms and long legs. It is black and white. There are some apples in its hands. It looks very happy. What is it? I don't know, but Lisa says it is a panda.

    There is a woman in the second drawing. She is thin. She has straight blonde hair, a small mouth, a big nose and two big eyes. She looks angry (生气的). Who is she? Lisa says she is our mom. But Mom has curly blonde hair, small eyes and a small nose.

    There is an animal in the third drawing, too. Its head is an apple. Its hair and tail (尾巴) are leaves (树叶). It has a long mouth, and it is a banana. Its four legs are carrots. What is it? Lisa says it i s a horse (马), but it doesn't look like a horse.

    Lisa is really a great artist, isn't she?