阅读理解。 What do pen pals write in the letters? In the children's letters, they often write about their school days, hobbies, and favorite stars. They may be from different(不同的)countries, and they may have lots of things to tell their pen pals. Some of them also send letters with their photos, and then their friends can 'see' their life. Many Chinese children are amazed to see their American friends are so free(自由) and relaxed at school. They don't have much homework. They are also amazed to see American students go to school in all kinds of funny clothes. The American students are amazed to see their Chinese friends are good at all subjects. They think Chinese words are too difficult, but their Chinese friends can write them well. Pen pals can know many new things from the letters. So they often write to each other(互相). 1. Pen pals often write about _____ in their letters. A. school days B. hobbies C. favorite stars D. all above (以上全部) 2. Some of the pen pals also send _____ in their letters, and then their friends can 'see' their life. A. stamps(邮票) B. food C. photos D. clothes 3. According to the passage, American students wear _____ to go to school. A. school uniforms B. only T-shirts C. only jeans D. all kinds of funny clothes 4. The American students think Chinese words are too _____. A. easy(简单的) B. hard C. interesting D. beautiful 5. The underlined word ' amazed ' means '_____' in Chinese. A. 惊讶的 B. 愉快的 C. 困难的 D. 愚昧的