阅读理解。 This is Jim. He is thirteen. He is from the U.S.A. He is a student. He has a good friend. His name is Jack. Jack is fifteen. He is from Australia. 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. 1. Jim and Jack are ____. A. sisters B. friend C. teacher and student D. from different countries(国家) 2. Jim and Jack are in ____. A. the same grade B. different grades C. the same color D. the same family(家庭) 3. Jack is in ____. A. Class 4 B. Class 3 C. Class 2 D. Class 1 4. They go to school at ____ in the morning. A. 6:00 B. 7:00 C. 7:30 D. 8:00 5. Jim is ____. A. short B. tall C. strong D. big