Tied to skis (滑雪板) and pulled around a     1     (freeze) lake by a thoroughbred racehorse—skijö ring is a sport like no other. The hardy skiers travel at frightening speeds, using just their voice and a set of rules to guide the horses around the icy track. The     2     (usual) sport is considered the showpiece event of the White Turf races—a wintery festival held at the upmarket ski resort of St. Moritz.

The sport requires the ability to mix skiing talent     3     a high-level of horsemanship. “During the race you need a really strong voice,” two-time race winner Valeria Holinger told CNN Sport. “Only by shouting can you make the horse go     4     (fast) than others”.

Competitors must wait until they’re 18 before     5     (allow) to participate in the event. Even then, driver—as they’re known—must pass fitness tests     6     hard theory exams—for good reason, too. Not only     7     (be) they traveling at incredible speeds, there is also the added danger of     8     (full) grown racehorses trampling (踩) on the skis. In addition, the speeding hooves (马蹄) kick up huge amounts of snow and ice     9     crash into the legs of the skiers behind.

Such unique threats call for unique     10     (protect). Drivers are required to use face masks to keep the snow out of their eyes and wear body armor under their ski suits.

Diet and way of life are often a problem for teenagers. However, if you eat the right food and exercise     1    (regular), you can feel better, look better and have more energy. So healthy eating along with regular exercise is probably     2     first step to become fit.

As a teenager, it is important to give your body the energy     3     needs. For a healthy diet, you should eat mostly rice, bread, vegetables and fruit. The most important thing to remember when you choose food is to protect yourself     4     some tricks. A number of people out there who want to make quick money are always fooling you into     5    (believe) what they say so their products can sell well. Don’t be tricked by them. What you need is just to trust a diet that     6     (be) right for your body.

Exercise is also something on     7     you can depend to make you look good, feel good and be healthy. It is obvious that exercise is     8     (benefit) to you. When you exercise, you build up the     9     (strong) of your muscles and your body produces some chemicals that make you feel peaceful and relaxed.

Follow the suggestions above,    10    you will look and feel much better in no time at all.