In this task, you're given an article and an answer. Your task is to generate the fill-in-the-blank question for this answer based on the given article. The blanks are always at the end of the question, and can be filled with more than one word or phrase.

Article: Of all nature's disasters, forest fires are often considered the most frightening. Moving at lightning speed, huge walls of flames can burn acres of land in just a few minutes. And although technology, including the use of tire-retardant chemicals, has greatly helped the fight against forest fires, they still take great damage. According to the National Interagency Fire Center, the fire season last year was the worst on record in terms of the number of fires and acres burned. There were 96.385 fires and9,873429 acres affected by fire in a year that was 125% more destructive than the 10-year average . These fires cost the federal govemment $1.5 billion to fight, and this figure does not include the money spent by local and state govemments as part of the effort. Fires in the southern states represented half of the national total last year. with Texas. Oklahoma and Arkansas being home to an usually high amount of activity. Wildfire have also taken place in Western states such as California, Colorado. and Alaska throughout the past 10 years. It is said that two-thirds of forest fires are started accidentally by people. almost one quarter are purposely set, while lighting causes 10%. Forest fires can have advantageous effects. Charcoal enriches soil, and some plant species grow well after. The cones of the jack pine tree, for example, will not spread their seeds unless there is heat. Douglas fir trees grow best in open sunlight areas after fire.
Answer: they spread too fast and make great damage.
Forest fires are considered to be the most frightening because _ .

Article: The following are books sold on our website, perhaps some of them you'll be interested in. The Top Gear Guide to Britain (Hardback) Our price: PS9.99 For over ten years, Top Gear has been travelling all over Britain in the course of making the world's best programme about cars, driving. This book is not only a guide for outsiders; it is an invaluable reference manual for Britons themselves, like a mirror held up to our very souls. Still Open All Hours (Hardback) Our price: PS12.49 From its first episode in 1973, Open All Hours was an instant hit. Audiences around Britain loved its familiar setting, good natured humour, and the hilarious partnership of Ronnie Barker and David Jason. Whilst it only ran for 26 episodes, it firmly cemented itself as a British comedy classic. Mrs Brown's Family Handbook (Paperback) Our price: PS7.99 Mrs Brown's Family Handbook, the first and only official book from Brendan O'Carroll's brilliant educational creation, is filled with useful advice and gives us a unique look into the lives of the Brown family. I'm Sorry I Haven't a Clue: The Best of Forty Years (Hardback) Our price: PS15.99 "I'm Sorry I Haven't a Clue" is the most listened to comedy programme on British radio. It regularly attracts a large audience. The author tells us about the forty years of the programme. Life on Air (Hardback) Our price: PS16.49 Sir David Attenborough is Britain's best-known natural history film-maker. His career as a naturalist and broadcaster has spanned nearly six decades, and in this volume of memoirs Sir David tells stories of the people and animals he has met and the places he has visited.
Answer: The Top Gear Guide to Britain
If you are driving to Britain for your holidays, you probably will be interested in _ .

Article: The Namib Desert in Africa is one of the driest places on earth.With half an inch of rain falling every year,humans call barely survive there for a week with no water.But the Namib beetle does just fine.It collects morning dew that condenses on its back. Inspired by this little creature,27--year--old Edward Linacre,a former student from Swinburne University of Technology in Melbourne,Australia,has designed a new"Airdrop" irrigation system which can pull water from even the driest desert air.His invention won the 2011 James Dyson Award,an international design award.Hopes are high that the system will be able to solve the problems of growing plants on dry land,according to the may Mail. Linacre studied the Namib beetle and found that it had hydrophilic skin on its back,which helped catch water molecules passing in the air.These water molecules accumulated into small drops of liquid water.He realized that as long as the air temperature was low enough,even the driest air contains water molecules that can be extracted . Following this principle,he designed the new system which works by pumping air through a network of underground pipes to cool it to the point at which water condenses.The water is then delivered directly to the roots of plants. According to the research,about 11.5 milliliters of water could be collected from every cubic meter of air in the driest desert.Further development could raise that number even higher . The idea of getting water from the air is not new.However,the Airdrop has certain advantages compared with its competitors.Similar systems often require great amounts of energy because they use refrigeration equipment to lower the temperature.But Airdrop simply uses the temperature difference between the air and the cool earth underground
Answer: the beetle's hydrophilic skin matters in surviving in the desert
From the text,we know that _ .