练习说明
句子填空 题目要求：阅读文段，从文中挑选原词补全句子，每道题目都有特定的字数要求，以黑体加粗字标示。请把答案填到每题空缺处。
Choose NO MORE THAN TWO WORDS from the passage for each answer.
第 1 题
Currently 24 per cent of the world's 11.5 billion hectares of cultivated land has already undergone human-induced soil degradation, particularly through erosion, according to a recent study by the UK Government Office for Science.
A UK Government study found that _______________ is a significant factor contributing to worldwide levels of soil degradation.
第 2 题
‘But there are problems, such as initial investment and operating costs that are too great ’, says a spokesman for Japan's Ministry of Agriculture, Forestry and Fisheries.
Disadvantages of vertical farming projects include the expense of setting them up, as well as their high _______________.
第 3 题
‘If you have three or four storeys of food already growing some place, they could become mobile unites that could be picked up by helicopters and dropped into the middle of a crisis zone. ’
_______________ could potentially be used to take vertical farming facilities to areas where there is a critical food shortage.
第 4 题
In 1893, after seeing examples of the machinery used in Europe in action at an international exhibition in Chicago, he bought some and began turning out chocolate coatings for the caramels he was already producing.
Hershey bought some _______________ after visiting a trade fair.
第 5 题
There was, however, no elected mayor or indeed any democratic system in place. The whole town was in essence Milton Hershey's private kingdom, and he ran it as he wanted.
The inhabitants of Hershey could not vote for a _______________.
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