在城市繁华中心地带的商铺内，放置统一尺寸大小的“格子柜”，任何人只需每月支付一定的费用，就可以租用一个柜子寄卖自己的物品，相当于拥有自己的一个“迷你实体店”，“格子店”以投入少、易操作为特点，吸引着众多淘宝店家．

张阿姨有格子柜40个，当每个格子柜的月租金为270元时，恰好全部租出．在此基础上，当每个格子柜的月租金提高10元时，格子柜就少租出一个，且没有租出的一个格子柜每月需支出费用20元，设每个格子柜的月租金为x（x≥270）元，月收益为y元（总收益=格子柜租金收入-未租出格子柜支出费用）

（1）求y关于x的函数关系；

（2）当月租金分别为300元和350元时，张阿姨的月收益分别是多少元？可以出租多少个格子柜？请你简单说明理由；

（3）若张阿姨某月出租格子柜的总收益为11100元，则她这个月出租了多少个格子柜？

Geography is the study of the relationship between people and the land. Geographers compare and contrast various places on the earth. But they also (51) beyond the individual places and consider the earth as a whole. The English word geography means "to describe the earth. " (52) geography books focus on a small area like a town or city. Others deal with a state, a region, a nation, or an (53) continent. Many geography books deal with the whole earth. Another (54) to divide the study of geography is to distinguish between physical geography and cultural geography. The former focuses on the natural world; the (55) starts with human beings and studies how human beings and their environment act (56) each other. But when geography is considered as a single subject, (57) branch can neglect the other. A geographer might be described as one who observes, records, and explains the (58) between places. If all places (59) alike, there would be little need for geographers. We know, however, that no two places are exactly the same. Geography, (60) is a point of view, a special way of looking at place.

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A.pass 

B.reach 

C.go 

D.set