Chinesestudentsmaybetheworld'smosthard-workingathome．Arecentreportsaysthat15-year-oldsinShanghaispendthelongesttimeonhomework，comparedwiththeirpeersaroundtheworld．ThereportwasreleasedbytheOrganizationforEcono

Question

Chinese students may be the world's most hard-working at home．A recent report says that 15-year-olds in Shanghai spend the longest time on homework，compared with their peers around the world．
The report was released by the Organization for Economic Cooperation and Development （OECD）．It surveyed 510，000 students in 65 countries and regions．Results show that the global average is about 4.9 hours'worth of homework each week．Students in Shanghai spend the longest time-13.8 hours．Those in Russia and Singapore take 9.7 and 9.4 hours respectively （各自）．Students in Finland spend the least time-fewer than 3 hours．
The study shows that students who did more homework scored higher in the Program for International Student Assessment （PISA），an academic test for 15-year-olds．For example，Shanghai and Singapore，where students spent much of their time on homework，came in first and second respectively in the PISA math test in 2012．
What's more，teens from wealthier backgrounds were doing 1.6 more hours of homework than their poorer peers．It may"have widened the performance gap between students from different socio-economic backgrounds"，the report warns．Poorer students may not have a quiet place to study at home，"it suggests．"Their parents may not be able to guide，motivate and support their children on homework because of work responsibilities．"
However，the number of hours spent on homework may influence students on an individual level，but it doesn't affect the country level．Factors like have a bigger impact on a country's overall performance．
A Report On Time for （71）___

（72） ___
Time and score	The （73） ___time students spent，the higher score they got．
Time and family （74） ___	Teens from wealthier families spent more time than those from poor families．
Conclusions	Students'individual level may be （75） ___because of the number of hours spent on homework． Teacher quality and school system organization affects the country's level．

Answer 1

71．Homework．细节理解题．考查报告研究的对象（内容），即时间用在哪里．需要填名词．根据全文所述，讨论的是各国学生在做家庭作业时花费的时间．比如开头就说"Chinese students may be the world's most...