My name is Jim. I am a student. At school, I have a good friend. His name is Mike. He is tall. He has short hair. We are classmates, too. We go to school at  7:00  o'clock. We go home at  5:00. It's  3:15  now. It's time to play games. Let's go to the playground. We play football with some boys.

They are         too.

“杂交水稻之父”袁隆平培育出高产的杂交水稻新品种，是利用了（    ）

王安石在《感事》一诗中写道：“贱子昔在野，心哀此黔首(百姓)。丰年不饱食，水旱尚何有？”为解决以上问题，他变法时采取的措施有
①青苗法　②募役法　③农田水利法　④方田均税法