A、在量筒中倒入适量的水，记下水的体积；将小矿石用细线系好后，慢慢地浸没在水中，记下小矿石和水的总体积．

B、把天平放在水平桌面上，把游码移到标尺左端的零刻度线处，调节横梁上的平衡螺母，使横梁平衡．

C、将小矿石放在左盘中，在右盘中增减砝码并移动游码，直至横梁恢复平衡．

下列各组字读音完全相同的一项是（　 　）。

    There are four seasons in a year in Canada. They are spring, summer, autumn and winter. In spring, the weather is warm and sunny. I like to fly kites. In summer, it's hot. I like to swim. I often wear a pair of glasses and a hat. In autumn, it's always cool. I like to go to the park and ride down the street with my friends. In winter, it's cold and snowy. I like to go outside to skate and ski with my friends. Sometimes we make a big snowman, and then we dance and sing around it.

根据短文，判断正误。

   My name is Mary. I am eleven. Ted is my brother. He is thirteen. We are in the same school. My mother is a teacher. She is a teacher in our school. My father is a teacher, too. He is a Chinese teacher in a college. I have a cat. Its name is Miaomiao. It is white. It is a nice cat. We are good friends.

   Once there was an old man in a town. He always forgot a lot of things. So his wife always had to say to him, "Don’t forget this ! "
One day he went on a long trip alone. Before he left home, his wife said, "Now you have all these things. They are what you need for your trip. Take care of your things during the trip." He went to the station, bought a ticket and got on the train with it.
   About half an hour later, the conductor began to see the tickets. He came to the old man and said, "Will you please show me your ticket?" The old man looked for his ticket in all his pockets, but he could not find it. He was very worried. “I can’t find my ticket. I really bought a ticket before I got on the train." said the old man.
   “I believe you bought a ticket. All right, you don’t have to buy another one," said the conductor kindly. "But how can I know where I’m going? ---I can’t remember my station!" the old man said sadly.