5、距,用f表示。()
(6)虚像不可能成在光屏上。()
(7)实像是倒立的,虚像是正立的。()
(8)实验前要调整蜡烛、光屏和凸透镜的高度,使它们的中心大致在同一高度上。()
阅读理解一 My name is Linda. I’m a girl. My mother is Mrs Hand. My father is 收集于网络,如有侵权请联系管理员删除__________________________________________________Mr Hand. My telephone number is 325-1429. I have a friend
6、. Her name is Mary Green. Her telephone number is 325-1593. We are good friends. 根据短文内容,选择最佳答案。()1. What’s Linda’s last name?A. Linda. B. Mrs Linda. C. Hand D. Linda Hand. ( ) 2. Linda’s father’s possible (可能的) name is______. A. Mr Hand B. Mary Hand C. Bob Hand D. Hand ( ) 3. What’s
7、Linda’s telephone number?A. It’s 3251539. B. It’s 325-1429. C. It’s Mary D. We don’t know.( ) 4. Who (谁) is Mary’s friend?A. Linda B. Mary Green C. Mr Hand. D. Mrs Hand. ( ) 5. What’s Linda’s friend’s name?A. Mary Green B. Hand C. Mr Hand. D. Jim 阅读理解二 My name is Amy. Loo