有学者说过，明清时期江南市镇并不是凭空产生的，而是存在于农村经济上面，是农村专业经济发展的结果。由此可见，这一时期江南经济发展的整体特点是（   )

短文改错
假如英语课上老师要求同桌之间交换修改作文，请你修改你同桌的以下作文。文中共有10处错误，每句中最多有两处。错误涉及单词的增加、删除或修改。
增加：在缺词处加一个漏词符号∧，并在此符号下面写出该加的词。
删除：把多余的词用斜线＼划掉。
修改：在错词下面划一横线，并在该词下面写出修改后的词。
注意： 1、每处错误及其修改均仅限一词； 2、只允许修改10处，多者从第11处不计分
    All parents wish their children, especially senior high students, can go to top universities and have a bright future. So they always expects their children to make fully use of their time to study. They don't allow them watch TV, play computer games or go out to play with their friends. Some students just complained that their parents are only concerned about their grades but not their other need.
    To my opinion, how our parents are doing is out of nothing but the love. The most important thing, I think, is that they should learn to communicate with our parents, telling them that we'll never let them down and will work harder to earn trust and respect from them.

李老师做了个长方形教具，其中一边长为2a+b，另一边长为a﹣b，则该长方形的面积为（   ）

阅读下面这首宋词，完成后面题。

好事近

吕渭老（南宋）

飞雪过江来，船在赤栏桥侧。惹^①报布帆无恙，著两行亲札。

从今日日在南楼^②，鬓自此时白。一咏一觞谁共？负平生书册。

【注】1127年靖康之变，局势危急，宋室南渡，士人也纷纷南迁。这首词就是吕渭老南渡后，写给友人的。①惹：同“偌”，如此。“惹报”有作“为报”。②南楼：词人在南方的住处。

照样子写词。

例：捶捶背

____