问题
选择题
下列命题正确的是（ ）
A．相等的圆心角所对的弦相等
B．等弦所对的弧相等
C．等弧所对的弦相等
D．垂直于弦的直线平分弦
答案
A、在同圆或等圆中，相等的圆心角所对的弦相等，故本选项错误；
B、在同圆或等圆中，等弦所对的弧对应相等，故本选项错误；
C、相等的弧所对的弦相等，正确；
D、垂直于弦的直径平分弦，故本选项错误．
故选C．
搜题请搜索小程序“爱下问搜题”
下列命题正确的是（ ）
A．相等的圆心角所对的弦相等
B．等弦所对的弧相等
C．等弧所对的弦相等
D．垂直于弦的直线平分弦
A、在同圆或等圆中，相等的圆心角所对的弦相等，故本选项错误；
B、在同圆或等圆中，等弦所对的弧对应相等，故本选项错误；
C、相等的弧所对的弦相等，正确；
D、垂直于弦的直径平分弦，故本选项错误．
故选C．
| 阅读理解。 | ||||
| ||||
| 1. Where is the swimming lesson? | ||||
[ ] | ||||
| A. Changchun Stadium. B. Great Swimming Pool. C. People Theatre. D. Great Garden. | ||||
| 2. When is the concert? | ||||
[ ] | ||||
| A. On Thursday (18:00-20:00). B. On Saturday (10:00). C. On Saturday (15:00-17:00). D. On Wednesday (10:30-12:00). | ||||
| 3. If you want to ask something about the basketball match, you can call ______. | ||||
[ ] | ||||
| A. 62603941 B. 70504266 C. 58796324 D. 99687241 | ||||
| 4. On Saturday, you can ______. | ||||
[ ] | ||||
| A. watch the basketball match and have the swimming lesson B. see the film Superman and go to the concert C. have the swimming lesson and go to the concert D. watch the basketball match and see the film Superman | ||||
| 5. Two adults and one child will spend ______ seeing the film Superman. | ||||
[ ] | ||||
| A. 87.5 yuan B. 40 yuan C. 8 yuan D. 16 yuan |