问题
问答题
根据平面镜成像规律在图中作一条入射光线，使其通过点A，并使其反射光线通过B点．
答案
根据平面镜成像的特点：像物关于平面镜对称，作出A点的像点A'，连接A'B，与平面镜的交点O为反射点，连接AO为入射光线，OB为反射光线，如图：
搜题请搜索小程序“爱下问搜题”
根据平面镜成像规律在图中作一条入射光线，使其通过点A，并使其反射光线通过B点．
根据平面镜成像的特点：像物关于平面镜对称，作出A点的像点A'，连接A'B，与平面镜的交点O为反射点，连接AO为入射光线，OB为反射光线，如图：
| 完形填空。 | ||||
| Today is Saturday. Tina stays at home _1_ her parents, Mr. King and Mrs. King. They want _2_ to the Haishan Park. The park is near their house, _3_ they walk to the park. It's 9 o'clock now. There are _4_ people in the park. Some people chat(聊天). Some people _5__ And some people sing. There are a lot of good places _6__ the park. Tina plays on the merry-go-round(旋转木马) with other _7__ Mr. King plays tennis in the sports club. And Mrs. King sings in the _8__club. They think it's very __9__ fter having a good time, they go to a restaurant to have _10__And they go back home at 2:00 in the afternoon. What a happy day today!
|