486﹣186=____ 250+250=____ 0.25×0.8=____ 4.2÷6=____

$\frac{1}{2}+\frac{1}{3}$ =____  $\frac{1}{3}-\frac{1}{5}$ =____ 24× $\frac{3}{8}$ =____ 21÷ $\frac{3}{7}$ =____

①小红家在小明家的北面，小兰家在小明家的南面。

②小军家在小红家的西面，小华家在小红家的东面。

③小兰家在小芳家的东面。

④剩下的一个地方是小强家。

茶陵诗派的主要特征是“出于宋元，溯源唐代”，着眼于体制法度和音节声调。其创立者是（   ）

    Mrs. Green works very long hours every day. She usually gets up(起床 ) at 5:40. She brushes her teeth(刷牙) and goes to her workplace (工作地点). Then she runs with some kids. After that she takes a shower(淋浴). she eats her breakfast at 7:00. Her work starts(开始) at 8:10. she is good at(擅长 ) history and many boys and girls learn history from her. All the kids（孩子） like her very much. She often talks or plays games with the kids. She  usually goes to bed(睡觉) after 22:00. she is often very tired(劳累) but she likes her job and loves the kids. She doesn't work on weekends. Mrs. Green likes reading at home on weekends(周末). Sometimes some kids' parents come to her home to talk about their kids. When Monday comes, Mrs. Green gets busy again.