题干

观察下面“品”字形中各数之间的规律,根据观察到的规律得出a的值为(   )

A:23

B:75

C:77

D:139

上一题 下一题 0.0难度 选择题 更新时间:2018-10-31 01:15:21

答案(点此获取答案解析)

B

同类题1

阅读理解

    Across Britain, burnt toast will be served to mothers in bed  this morning as older sons and daughters to deliver their supermarket bunches of flowers, But, according to a new study, we should be placing a higher value on motherhood all year.

    Mothers have long known that their home worked was just heavy as paid work. Now, the new study has shown that if they were paid for their parental labors, they would earn as much as£172,000 a year.

    The study looked at the range of jobs mothers do, as well as the hours they are working, to determine the figure. This would make their yearly income £30, 000 more than the Prime Minister earns.

    By analyzing the numbers, it found the average mother works 119 hours a week,40 of which would usually be paid at a standard rate 79 hours as overtime. After questioning 1,000 mothers with children under 18,it found that ,on most days, mums started their routine work at 7am and finished at around 11pm.

    To calculate just how much mothers would earn from that labor, it suggested some of the roles that mums could take on, including housekeeper, part-time lawyer, personal trainer and entertainer. Being a part-time lawyer, at £48.98 an hour, would prove to be the most profitable of the “mum jibs”, with psychologist(心理学家)a close second.

    It also asked mothers about the challenges they face, with 80 percent making emotional(情感的)emand as the hardest thing about motherhood.

Over a third of mums felt they needed more training and around half said they missed going out with friends.

    The study shoes mothers matter all year long and not just on, Mother's Day. The emotional, physical and mental energy mothers devote to their children can be never-ending, but children are also sources of great joy and happiness. Investing(投入)in time for parenting and raising relationships is money well spent.

同类题3

阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项,并在答题卡上将该项涂黑。

D

    In today's consumer world, we've never had so much, yet it seems we've never been so unsatisfied. The cost of housing has been rising for decades, and the cost to the planet has been huge, too. But there is a way to live a simpler, greener, and more affordable life: buy a Tiny Dwelling home!

    Tiny Dwelling homes are very small, yet comfortable houses at affordable prices. Each Tiny Dwelling home has a contemporary design and included a living room, kitchen, bathroom, upstairs sleeping area, and convenient storage space. Tiny Dwelling homes are cheap to run and ecologically-friendly, too. All you need is a small heater to keep your house warm in cold weather, and solar panels (太阳能电池板) in order to provide light and electricity.

    Tiny Dwelling is part of the small-living movement that began in the late 1990s. Back then, a growing number of people began to live in very small homes. They wanted to reduce their possessions, living space, and energy costs, so as to lead more ecologically-friendly lives. But the sm all-living movement really took off after the economic crisis of 2008, when many people realized that they couldn't afford to keep large homes.

    Lizzy Morriaon, a small-living enthusiast, started Tiny Dwelling homes in 2008 to meet the needs of these people. Since then, Lizzy has been designing and building homes nonstop, and Ti ny Dwelling homes have become so popular that thousands of people have bought one. And Lizzy hasn't only designing and building houses. She has also been teaching people how to build them. Simply buy the plans and materials so that you can build your own home, and save even more money!