学校体育最主要的本质功能是（）。 ["教养功能","教育功能","美育功能","强身健体功能"]
简述拍摄体育比赛时确定照相机快门速度的因素。
以下不属于创新型还款方式的是（） ["双周供","按期付息还本","本金归还计划","等额本息还款"]
下列哪项不属于良好的个人卫生习惯？（） ["勤洗手、洗澡","不吸烟","勤开窗","只在早晨刷牙"]
1. interface DoStuff2 { 2. float getRange（int low， int high）； } 3. 4. interface DoMore { 5. float getAvg（int a， int b， int c）； } 6. 7. abstract class DoAbstract implements DoStuff2， DoMore { } 8. 9. class DoStuff implements DoStuff2 { 10. public float getRange（int x， int y） { return 3.14f； } } 11. 12. interface DoAll extends DoMore { 13. float getAvg（int a， int b， int c， int d）； } What is the result？（） [" The file will compile without error."," Compilation fails. Only line 7 contains an error."," Compilation fails. Only line 12 contains an error."," Compilation fails. Only line 13 contains an error."," Compilation fails. Only lines 7 and 12 contain errors."," Compilation fails. Only lines 7 and 13 contain errors."," Compilation fails. Lines 7， 12， and 13 contain errors."]
初中语文综合性学习的内容特点？
