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回答{TSE}题: How Technology Pushes Down Price 1 Prices have fallen in the foodbusiness heeause of advances in food production and distribution technology.Consumershave benefited greatly from those advances.People who predicted that the wold would run out of food were wron9.We are producing more and more food with less and less capital.Foodis therefore more plentiful and cheaper than it has ever been.Spending on food compared with other goods has fallen for many years,and continues to drop. 2 Supermarkets have helped pushdown prices mainly because of their scale.Like any big business’they can invest in IT systems that make themefficient.And their size allows them to buv in bulk.As supermarkets get bigger,the prices getlower. 3 Huge retail companies such asWal-Mart have tremendous power and they can put pressure on producers to cuttheir margins.As a result,some producers have had to make cuts.Inrecent years. Unilever has cut its workforce by33,000 to 245,000 anddropped lots of its minor brands as Dart of its“path to growth”strategy.Cadbury has shut nearly 20 percent of its 133 factories and cut 10Dercent of its 55,000 global workforce.These cuts help keep costs down,and theprice of food stays low. 4 Does cheap food make people unhealthy? Cheap food may encotlrage people toeat more.Good companies certainly think that givingpeople more food for their money makes them buy more.Givingpeople bigger portmns IS an easy way of making them feel they have got a betterdeal.That is why Dortions have got larger and larger.In America,soft drinks came in 80z(225g)cansin the past,then 120z(350g),andnow come in 200z(550g)calls.If a company can sell youan 80z portion for$7,they can sell you a 120z portionfor$8.The only extra cost to the company is the food,which Drobably costs 25 cents. 5 Now companies are under pressureto stop selling bigger portions for less money.But it is hard to change the trend. {TS}Paragraph 1__________
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【多选题】脑血栓形成的临床特点是______。
A.
多见于50岁以上高血压病史者
B.
安静状态下发病
C.
可有前驱症状
D.
多无头痛
E.
多无昏迷
【单选题】脑血栓形成的临床特点不正确的是
A.
安静或休息状态发病
B.
起病缓慢
C.
以偏瘫、失语等局灶定位症状为主
D.
不会有头痛、意识障碍等全脑症状
E.
多见于50岁以上有动脉硬化、“三高”者
【单选题】已知信号【图片】当【图片】和【图片】时等于零,则【图片】当 时一定等于零。
A.
B.
C.
D.
【单选题】80C51单片机的P0口功能是:
A.
可以作为通用输入/输出口,也 作为地址/数据总线 ,接外围芯片时分时输出低8位地址及数据信号。
B.
可以作为通用输入/输出口,也 作为地址/数据总线 ,接外围芯片时分时输出高8位地址及数据信号。
C.
只可以可以作为通用输入/输出口。
D.
只可以也 作为地址/数据总线。
【判断题】P0口作为高8位地址总线及数据总线的分时复用端口。
A.
正确
B.
错误
【单选题】哪种数据类型只说明事物在属性或类别上的差异
A.
称名数据
B.
比率数据
C.
顺序数据
D.
等距数据
【判断题】当外扩存储器及I/O接口芯片时,P0口作为低8位地址总线及数据总线的分时复用端口,P2口作为高8位地址总线输出高8位地址。
A.
正确
B.
错误
【单选题】哪种数据类型只说明事物在属性或类别上的差异
A.
比率数据
B.
顺序数据
C.
等距数据
D.
称名数据
【单选题】哪种数据类型只说明事物在属性或类别上的差异( )。
A.
比率数据
B.
顺序数据
C.
称名数据
D.
等距数据
【单选题】脑血栓形成的临床特点不正确的是( )
A.
安静或休息时发病
B.
起病缓慢
C.
以偏瘫、失语等局灶定位症状为主
D.
不会有头痛、意识障碍等全脑症状
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