GWD-26-Q20 没讨论过

xuehanfei

http://findarticles.com/p/articles/mi_m1355/is_1998_Nov_30/ai_53365392

In 1981 the study reported that children spent an average of slightly less than two and a half hours a week doing household chores. By 1997, the year the field research was conducted, that figure had grown to nearly six hours a week.

tiffany1102

up......

skigorush

skigorush

yy179920478

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wangchen0355

1