Tom and Mike are good friends. They are good to kids. They want to find summer jobs. One day Tom tells Mike that Beidaihe Kids Summer Camp needs help with sports, music and computers. They are both very glad to hear this.

    Tom can play basketball and volleyball, and he can swim, too. Mike can play the violin, the drums and the guitar, and he also likes soccer. Tom and Mike like computers very much. Can they join the Summer Camp?

Dear James,

    How are you? I want to tell you about the ways (方式) my family go to work or school. My parents are teachers, but they are not in the same school. My father's school is far from our home. It's about five kilometers. He drives his car to school every day. My mother usually walks to her school, because her school is near our home. I have two brothers, John and Peter. John is a high school student (高中生). He likes taking a bus to school. He thinks it is fun, because he can meet his friends and tall with them on the bus. It takes him thirty minutes to get to school. Peter and I are students in a middle school. My mother is in the school, too. I always go to school with Peter. We ride our bikes to school for ten minutes every school day.

    What about you? How do you get to school?

Yours,

Amy

①As missing children get older，they become quite different from the faces in their last﹣known photographs，which makes finding the really difficult. Now AI（人工智能）can make it easier to match any found children to those old photos. 

②Police can use software（软件）to age photos of missing people，but it seems to work best in adults

③Unlike adults ，the faces of children change greatly as time goes by，and matching photos of found children to old images（画像）（数据库）of missing children is difficult. "Even with a recent face image of a child，it is quite hard for a human to recognize（辨认），who the child is from a large data set of child face images，" says Debayan Deb at Michigan State University. 

④Now Deb and his teammates have created an algorithm（算法）to work out the problem. They created a face﹣recognition algorithm on data sets，which have images of nearly 1

⑤AI learned to match recent photographs of children with images taken 2. 5 years earlier. The correct matching rate can be 80 percent. With one year between the two photographs，it was 90 percent correct at recognizing faces. This dropped to 73 percent after three years. The new AI might help to improve accuracy （准确性）of this kind of software

⑥Deb's next goal（目标 ）is to make the age gap wider. His team also hopes to develop an app to fight against the sale of children.