this book and tell me what you think of it. 

将从1开始的连续自然数按一下规律排列：

第1行					1
第2行				2	3	4
第3行			9	8	7	6	5
第4行		10	11	12	13	14	15	16
第5行	25	24	23	22	21	20	19	18	17

…

则2017在第____行．

    It seems to be strange to you there is a blind spot(点) on the eyes. Here is an interesting experiment that can make something disappear, when one eye is open.
　Make a card about the size of a postcard and write two English letters L and R on it, L on the left and R on the right. First, hold the card about 80 cm away and you see both the letters. Then close your right eye and look at the letter R only with your left eye. And now, as you move the card slowly towards you, you'll find the letter L disappearing. But if you move the card nearer to your face, the letter will be seen again. Now do the same experiment with your left eye closed, you'll find the letter R disappearing.
    Why does the letter disappear? It is because there is a blind spot on the eye. When the image of the letter falls on the blind spot, it won't be seen. That is why either of the letters disappears.

湖陆风包括湖风（出湖风）和陆风（进湖风），是较大湖泊与陆地之间形成的以24小时为周期的地方性风。图1示意洞庭湖与岳阳市之间一天中某时刻测得的湖陆风垂直结构，图2示意洞庭湖东北部的岳阳市某日6～14时的气温与湿度变化。据此完成（1）～（3）题。

下列叙述中，与北方地区相符的是（　　）

①农田以旱地为主    

②作物熟制一年两熟、两年三熟    

③赛龙舟为传统的运动项目

④以种植小麦、大豆为主 

⑤民居屋顶坡度较大，墙体较厚。