读课文《“年”的来历》，老头是个什么的老头，老婆婆怎样对他？

    It can be hard to stay focused(专注的）all day at school.But ____ (luck),the subjects change,so you don't need to focus on the same subject all day long.Each subject ____  (last)for a limited time,____ you just need to focus for limited periods of time.There is usually a short break as you change books and other things for ____  new subject.

    At school,if your mind wanders(漫游)while you're listening or doing work at your seat, you'd better change the way you're sitting.In that way,you will become more ____  (comfort). Take a deep breath,so you can better listen to ____  is being said.

    To keep your mind on the work,talk to yourself about it.Ask yourself questions about what you need to do,then answer the questions and do the things you need to do.Do one thing at a time till you get it completely ____ (do).

    If the work is hard,don't just give ____ .Give it a try or ask for help.____  (put)it off won't help you do it,and that won't make the work any easier.Give ____ (you)brain a challenge--it's good exercise!

材料一  海河流域示意图

材料二  2017年4月1日，中共中央、国务院印发通知，决定设立河北雄安新区。雄安新区规划范围涵盖河北省雄县、容城、安新等3个小县及周边部分区域。届时，北京部分非首都职能将转移到雄安新区。