题目

The Arctic Circle—the habitat of polar bears and decreasing sea ice at the top of the world—hit 32 degrees Celsius, last week.This was the temperature in Banak, Norway on July 30, though some Norwegian areas even reached a couple degrees warmer, according to the European meteorology site severe-weather.eu. Banak sits atop northern Europe, over 350 miles above the bottom edge of the Arctic Circle.The greater Northern Hemisphere and Europe itself have been repeatedly scorched by both record and near-record temperatures this summer, a consequence of overall rising global temperatures.In the p计算0.25×(-12)-4-4÷(5-1)0-(254)-12=______．