What's the best way to lose weight（重量）？You can make it fun by （31）　　outdoor activities．You'll be amazed at the number of calories（卡路里）you'll （32）　　in a short time．Here's some advice to help you to lose weight．

Hike（徒步旅行）to Lose Weight

Hiking is an excellent （33）　　of exercise for burning calories and increasing your heart system．What's more，if you hike on hills，it （34）　　to build and strengthen（增强）leg muscles（肌肉）．

Kayaking（划独木舟）to Lose Weight

If you love the（35）　　，then you may go kayaking! Generally，a woman can lose half a pound from an afternoon of white﹣water kayaking．A man lose even （36）　　，around 2，200 calories．This sport builds strength in your （37）　　and upper body muscles．It's （38）　_　a great way to make you slimmer．

Ski to Lose Weight

Skiing is one great sport to lose weight because（39）　　can use all of your major muscle groups﹣from your chest to shoulders．It can improve your balance by exercising your main muscles（40）　　you can't fall down．So，it's no surprise that you can burn a large 3，000 calories if you're a man and a little less for a woman，after 6 hours of skiing．

31．A．staying away from	B．doing well in	C．taking part in
32．A．waste	B．store	C．burn
33．A．way	B．grade	C．diet
34．A．decides	B．helps	C．plans
35．A．soil	B．water	C．sand
36．A．worse	B．better	C．more
37．A．arms	B．legs	C．heads
38．A．too	B．never	C．also
39．A．he	B．you	C．she
40．A．so that	B．in order to	C．so as to