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
Family visits to museums in Australia share a number of characteristics. Generally, visitors take time for orientation, enter with a sense of curiosity, link what they see to their own prior experiences and are most attracted to interactive displays.
When family visit museums, they prefer exhibits that are___.
第 2 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 3 题
It's a compelling vision, and one that has already been put into practice in Asia, albeit on a smaller scale. ‘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 4 题
‘Developing an emergency-response system for crop production inside specially constructed modular and highly transportable greenhouses would allow for humanitarian interventions, at least for refugees that are forced out of their countries by political turmoil,’ he says. ‘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. The food would be ready to pick and eat. It could be designed to supply people with all the nutrition they need to make it through the crisis. ’
_______________ could potentially be used to take vertical farming facilities to areas where there is a critical food shortage.
第 5 题
But why would chilies have evolved to produce the varying degrees of heat of capsaicin? Chili peppers, like other fruit, lure birds and other animals to eat them and disperse their seeds. But chilies also attract predators, largely rodents like packrats and cactus mice, that crush seeds and make germination impossible.
Some animals destroy the seeds of the fruits, preventing _____.
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