文中共有10处语言错误,每句中最多有两处。错误涉及一个单词的增加、删除

或修改。删除：把多余的词用斜线（\）划掉。增加：在缺词处加一个漏字符号（∧）,并在其下面写出该加的词。修改：在错的词下划一横线,在该词下面写出修改后的词。

注意：1）每处错误及修改均仅限一词。

      2）只允许修改 10 处,多者（从 11 处起）不计分。

      3）请注意改错要求并将答案改在答题卷的相应位置，其他位置无效。

    My dream school starts at 8:30 a.m and ends at 3:30 p.m. They are three lessons in the morning and two in the afternoon. We didn't need to do so many homework. Therefore, we have more time with after-school activities. For example, we can do reading for one and a half hour and play sport for one hour every day.

    My dream school look like a big garden. There are all kinds of the flowers and trees around the classroom buildings. We can lie on the grass for a rest, sat by the lake listening music. The teachers here are kind and helpfully. They are not only our teachers but also our friends.

家鸽全身最发达的肌肉是（  ）

若向量$\overrightarrow{a}$=(1,0,z)与向量$\overrightarrow{b}$=(2,1,2)的夹角的余弦值为$\frac{2}{3}$，则z=____ ，|$\overrightarrow{a}$-2$\overrightarrow{b}$|=____ 

下面光学仪器中，能成放大实像的是（　　）

欧洲第一长河是____ 河，美国农业实现了地区生产的 ____ 化．