家乡还有诸如____等社会福利机构；同时还有依法维护、保障妇女儿童合法权益的____。

完形填空，阅读短文，根据短文选出最佳答案。

                                                                                       Shopping on Taobao

    Where do you often go shopping?

  “Who needs a shopping mall 1we have Taobao?”2 Wang Lin. she is 28 3 old . She is a writer in Beijing. Taobao is China's largest online shopping website. Shopping on Taobao is an important part of Wang Lin's life. She spends lots of money 4Taobao every day.

    Now 5 people like Wang Lin find the joy of shopping online. Among(在……之中) them, women are much more than 6, because they can seldom say beautiful clothes.

   “Taobao” means “look for treasure”in 7. People can find 8 they need on Taobao, 9 candies to DVD players.

Wang Lin says, “It is very cheap". If you don't like the goods (商品), you can get your 10 back. I like shopping on Taobao.

教养主要指人在文化与品德方面的修养，文化水平高，教养就好。（   ）

刘佳是七（3）班学生，她对自己班上科任老师的教学特点作了如下总结：语文老师：幽默风趣，热情奔放，讲课富有感染力；数学老师：严谨、一丝不苟，深入浅出，启发性强，但一脸严肃……刘佳同学这样做的好处是（   ）

如图甲所示， MN左侧有一垂直纸面向里的匀强磁场。现将一边长为l、质量为m、电阻为R的正方形金属线框置于该磁场中，使线框平面与磁场垂直，且bc边与磁场边界MN重合。当t=0时，对线框施加一水平拉力F，使线框由静止开始向右做匀加速直线运动；当t=t₀时，线框的ad边与磁场边界MN重合。图乙为拉力F随时间变化的图线,不及摩擦阻力。由以上条件可知，磁场的磁感应强度B的大小为