第二节:语法填空 (共10小题,每小题1.5分,满分15分)
Exercise is good for you, but most people really know very little about __31___ to exercise properly. So when you try, you __32___ run into trouble.
Many people believe that when specific muscles are exercised, the fat in the neighbouring area is “burned up”. Yet the truth is __33___ exercise burns fat from all over the body.
Studies show muscles which are not exercised lose their strength very quickly. To regain it __34___ (need) 48-72 hours and exercise every other day will keep a normal level of physical strength.
To lose weight you should always “work up a good sweat” when __35___ (exercise). Sweating only reduces body temperature to prevent heating. This is nothing __36___ water loss.