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Word came from California of a new weapon in the war on household pests£®Two scientists work for a firm in California developed 1£®__________ 

a new method to eliminate insects with using dangerous chemicals£®The new 2£®__________ 

weapon¡ªhot air£®The basic idea is that insect pests can adjust to temperature much above 3£®__________ 

normal£® In laboratory experiments£¬cockroaches and termites can¡¯t survive much more than a quarter of hour at 100 degrees 4£®__________ 

Fahrenheit or about fifty degrees centigrade£® The new method involves covering a house with a huge tent£¬and fill it with air heated to 5£®__________

around 65 degrees centigrade£®Hot air is forced in with fans and the tent keeps the heat inside the house£®Although termites try to escape by 6£®__________

hiding in wood beams£¬the heat treatment must be continued by four to six hours£®But when it's 7£®__________

all over and the insects are dead£¬ there are no toxic residues to danger humans or pets£¬and no 8£®__________

funny smells£®Scientists claim that there's no danger of fire too£® 9£®__________