下列哪种植物的种子属于有胚乳种子?( )
自然界中,自花传粉的花不一定是( )。
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One of the things that make Fiji a tourist attraction is
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What does the text tell us about Fijian people ?
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下列各组词语中,没有错别字的一组是( )(原创)
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外胚乳具胚乳的作用,仅见于无胚乳种子。( )
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侧根为定根,起源于根毛区内中柱鞘的一定部位,为内起源。( )
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下列各句中加点词语使用恰当的一句是( )(原创)
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—— Do you mind my opening the window? It’s a bit hot in here.
—— , as a matter of fact
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What can we infer from the text?
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B
Having a husband means an extra seven hours of housework each week for women, according to a new study. For men, getting married saves an hour of housework a week. “It’s a well-known pattern,” said lead researcher Frank Stafford at University of Michigan’s Institute for Social Research. “Men usually work more outside the home, while women take on more of the housework.”
He points out that differences among households(家庭)exist. But in general, marriage means more housework for women and less for men. “And the situation gets worse for women when they have children,” Stafford said.
Overall, times are changing in the American home. In 1976, women busied themselves with 26 weekly hours of sweeping-and-dusting work, compared with 17 hours in 2005. Men are taking on more housework, more than doubling their housework hours from six in 1976 to 13 in 2005.
Single women in their 20s and 30s did the least housework, about 12 weekly hours, while married women in their 60s and 70s did the most-about 21 hours a week.
Men showed a somewhat different pattern, with older men picking up the broom more often than younger men. Single men worked the hardest around the house, more than that of all other age groups of married men.
Having children increases housework even further. With more than three children, for example, wives took on more of the extra work, clocking about 28 hours a week compared with husbands’10 hours.
45. According to the “well-known pattern” in Paragraph 1, a married man___________.