美国发达的工业为商品谷物农业生产提供了
①丰富的劳动力资源 ②先进的农业科技
③生产环节由机械操作 ④优质化肥、农药

如图1所示，电源电压为6V，图甲为伏安法测电阻的电路图；图乙为连接不完整的实物图．

20世纪末，人类进入了高度的信息化时代，上网人数每年正以翻一番的速度增长。上网群体主要是（   ）

假设你叫林洋，收到了你的笔友Susan的一封信，请你给她写一封回信。在信中回答她的问题，提出你的建议，并就此事谈谈你的看法。
Dear Lin Yang,
I have a problem these days. My mother doesn’t allow me to watch TV even on weekends. She says as a middle school student, my job is to study. After I finish my homework, she says, I should read books and watching TV is bad for me. But I think I need a rest and watching TV helps me learn a lot too.
Do you have the same problem? What do you think of my mother’s decision? What should I do?
Yours,
Susan

千百年来，多少文人墨客，赏月饮酒，借月传情，留下传诵千古的名句，形成了“月亮情结”。请写出你最喜欢的诗句（两句）。