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【多选题】
Organic food: why? Today, many governments are promoting organic or natural farming methods that avoid use of pesticides and other artificial products. The aim is to show that they care about the environment and about people's health. But is this the right approach? A. Europe is now the biggest market for organic food in the world, expanding by 25 percent a year over the past 10 years. So what is the attraction of organic food for some people? The really important thing is that organic sounds more ‘natural’. Eating organic is a way of defining oneself as natural, good, caring, different from the junk-food-scoffing masses. As one journalist puts it: It feels closer to the source, the beginning, the start of things.' The real desire is to be somehow close to the soil, to Mother Nature. B. Unlike conventional farming, the organic approach means farming with natural, rather than man-made, fertilisers and pesticides. Techniques such as crop rotation improve soil quality and help organic farmers compensate for the absence of man-made chemicals. As a method of food production, organic is , however, inefficient in its use of labour and land; there are severe limits to how much food can be produced. Also, the environmental benefits of not using artificial fertiliser are tiny compared with the amount of carbon dioxide emitted by transporting food (a great deal of Britain’s organic produce is shipped in from other countries and transported from shop to home by car). C. Organic farming is often claimed to be safer than conventional farming - for the environment and for consumers. Yet studies into organic farming worldwide continue to reject this claim. An extensive review by the UK Food Standards Agency found that there was no statistically significant difference between organic and conventional crops. Even where results indicated there was evidence of a difference, the reviewers found no sign that these differences would have any noticeable effect on health. D. The simplistic claim that organic food is more nutritious than conventional food was always likely to be misleading. Food is a natural product, and the health value of different foods will vary for a number of reasons, including freshness, the way the food is cooked, the type of soil it is grown in, the amount of sunlight and rain crops have received, and so on . Likewise, the flavour of a carrot has less to do with whether it was fertilised with manure or something out of a plastic sack than with the variety of carrot and how long ago it was dug up. The differences created by these things are likely to be greater than any differences brought about by using an organic or non­organic system of production. Indeed, even some ‘organic’ farms are quite different from one another. E. The notion that organic food is safer than ‘normal’ food is also contradicted by the fact that many of our most common foods are full of natural toxins. Parsnips cause blisters on the skin of agricultural workers. Toasting bread creates carcinogens. As one research expert says: ‘People think that the more natural something is, the better it is for them. That is simply not the case. In fact, it is the opposite that is true: the closer a plant is to its natural state, the more likely it is that it will poison you. Naturally, many plants do not want to be eaten, so we have spent 10,000 years developing agriculture and breeding out harmful traits from crops.' F. Yet educated Europeans are more scared of eating traces of a few, strictly regulated, man-made chemicals than they are of eating the ones that nature created directly. Surrounded by plentiful food, it’s not nature they worry about, but technology. Our obsessions with the ethics and safety of what we eat - concerns about antibiotics in animals, additives in food, GM crops and so on - are symptomatic of a highly technological society that has little faith in its ability to use this technology wisely. In this context, the less something is touched by the human hand, the healthier people assume it must be. G. Ultimately, the organic farming movement is an expensive luxury for shoppers in well-manicured Europe. For developing parts of the world, it is irrelevant. To European environmentalists, the fact that organic methods require more labour and land than conventional ones to get the same yields is a good thing ; to a farmer in rural Africa, it is a disaster. Here, land tends to be so starved and crop yields so low that there simply is not enough organic matter to put back into the soil. Perhaps the focus should be on helping these countries to gain access to the most advanced farming techniques, rather than going back to basics. Which TWO negative aspects of organic farming does the writer mention?
A.
Consumers complain about the extra cost.
B.
Organic food may make people ill.
C.
Farm workers have to be specially trained.
D.
It requires too much technological expertise.
E.
It is not possible in some countries.
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【多选题】《企业会计准则》规定,收入按其性质不同可以分为
A.
销售商品收入
B.
提供劳务收入
C.
让渡资产使用权的收入
D.
营业外收入
【单选题】形成绩效计划的过程是( )的过程
A.
自上而下
B.
自下而上
C.
双向沟通
D.
单向沟通
【单选题】在 C 语言中,下列说法正确的是()
A.
编程时尽量不要使用 “do 语句 while( 条件 )” 的循环
B.
“do 语句 while( 条件 )” 的循环中必须使用 “break” 语句退出循环
C.
“do 语句 while( 条件 )” 的循环中,当条件非 0 时将结束循环
D.
“do 语句 while( 条件 )” 的循环中,当条件为 0 时将结束循环
【判断题】关中印象体验地“袁家村”属于陕西省的特色餐饮街区。
A.
正确
B.
错误
【简答题】C语言编程,用do...while循环结构实现如下功能:利用公式π/4=1-1/3+1/5-1/7+...,求π的近似值,直到最后一项的绝对值小于10^-6为止。
【简答题】Task 2 45.
【多选题】使用C++语言编程,下面的描述不正确的是( )
A.
do-while 语句构成的循环,当 while 语句中的表达式值非零时结束循环
B.
do-while语句构成的循环必须用break语句才能退出
C.
不能使用do-while语句构成的循环
D.
do-while语句构成的循环,当while语句中的表达式值为零时结束循环
【多选题】《企业会计准则》规定,收入按其性质不同可以分为
A.
销售商品的收入
B.
提供劳务收入
C.
让渡资产使用权的收入
D.
营业外收入
【多选题】绩效计划是在组织部署战略和团队目标确认的基础上,考评者与被考评者在绩效周期内的()进行沟通,从而形成绩效契约的过程。
A.
工作目标
B.
考评标准
C.
工作环境
D.
考核内容
【单选题】以下说法不正确的是()
A.
C语言中的do-while语句编写的循环一次循环体都不会执行
B.
程序三大结构是顺序,选择,循环
C.
for循环语句可在循环体中利用break无条件跳出当前循环
D.
当continue 语句加入循环体中时,执行continue之后,程序会跳出当次循环,进入下一次循环
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