Fill in each blank with a suitable word given below.
limits colder beneath fatter with lower inside generates while against
At the yearly Rottnest Channel Swim in Westem Australia, participants often smear their bodies with animal ft for insulation 36 the 70-degree water. But their own body fat also helps to kcep them warm, like an extra layer of clothing37the skin. When scientists studied aspects of the event in 2006, they found that swimmers 38_ a greater body mass index (BMI) appearto be at much 39 risk of getting hypothermia. Under certain conditions, though, overweight people might feel, 40 than people of average weight. That's because the brain combines two signals-the temperature 41 the body and the temperature on the surface of the skin-to determine when it's time to constrict blood vessels (which42 heat loss through the skin) and trigger shivering (which43 heat). And since subcutaneous fat traps heat, an obese person's core will tend to remain warm. 44his or her skin cools down. According to Catherine O'Brien, a research physiologist with the U.S. Army Research Institute of Environmental Medicine, it's possible that the lower skin temperature would give, 45 people the sense of being colder overall.
回答第（38）空
【正确答案】：with
