This is Jim. He is thirteen. He is from the USA. He is a student. He has a good friend. His name is Jack. Jack is fifteen. He is from Canada. Jack is tall but Jim is short. They are in the same class, but they are in different grades. Jim is in Class Two. Jack is in Class Two, too. They go to school(上学) at seven in the morning and go home(回家) at six in the afternoon. 根据短文内容，选择正确答案。 小题1: Jim and Jack are ____. A．sisters B．friend C．teacher and student D．from different countries(国家) 小题2:Jim is ____. A．short B．tall C．strong D．big 小题3:Jim and Jack are in ____. A．the same grade B．different grades C．the same color D．the same family 小题4:Jack is in ____. A．Class 4 B．Class 3 C．Class 2 D．Class 1 小题5:They go to school at ____ in the morning. A．6:00 B．7:00 C．7:30 D．8:00