A study from the Ohio State University says it is rare （罕见的） for men to do the same share of housework. Researchers looked at 182 working couples who became first-time parents. Both partners worked the same number of hours in full-time jobs. Men did less housework after the baby was born， even though both parents worked the same number of hours in their job. Fathers did an average （平均数） of five hours a week less housework. They spent this time helping to look after the baby.
　　Becoming a parent added about 21 hours per week to the work mothers did. Most of their extra （额外的） work was spent looking after her baby. The researchers explained why new fathers did not keep up with the extra work. They said most men didn’t realize that the mother was doing so much more. Another reason is that after a baby is born， fathers follow what happened in their own homes when they were younger. They follow the ‘traditional’ roles of the mother looking after the baby and the father working， even though the mother is working the same number of hours in her job.
　　1. Questions： What is the first reason for a new father to be lazier after a baby is born？
　　2. Mixed-up Sentence Exercise（单词组句）：
　　1） both same number job partners of hours in full-time worked the
　　2） most work was spent of their after her baby extra looking
　　答案：1. Most men didn’t realize that the mother was doing so much more.
　　2. 1） Both partners worked the same number of hours in full-time jobs.
　　2） Most of their extra work was spent looking after her baby.