四级试题（四级实题）
Most animals seek shade when temperatures in the Sahara Desert soar to 一 二0 degrees Fahrenheit. But for the Saharan silver ant, （ 一）crawling from their underground nests into the sun's brutal rays to （ 二）hunt for food, this is the perfect time to seek lunch. In 二0 一 五 these ants were joined in the desert by scientists from two Belgian universities, who spent a month in the （ 三）extreme heat tracking the ants and digging out their nests. The goal was simple, to discover how the （ 四）species adapted to the kind of heat that can （ 五）literally melt the bottom of shoes. Back in Belgium, the scientists looked at the ants under an electronic microscope and found that their （ 六）thick, triangular hair reflects light like a prism (棱镜), giving them a metallic reflection and protecting them from the sun's awful heat. When Ph.D. student Quentin Willot （ 七）removed the hair from an ant with a （ 八）tiny knife and put it under a heat lamp, its temperature jumped. The ants' method of staying cool is （ 九）unique among animals. Could this reflective type of hair protect people必修 Willot says companies are interested in （ 一0）adapting these ants' method of heat protection for human use, including everything from helping to protect the lives of firefighters to keeping homes cool in su妹妹er.