شرکت در آزمون آنلاین انگلیسی 3 - انگلیسی 3 | آزمون شماره 11496

What I can add at the end is the role of our parents’ ………, values, and principles in our lives.

Every year a lot of Ecotourists travel to the pole to see and take a picture of icebergs , polar animals and ...................... of global warming on glaciers.

Do you know how languages were … ? I think by traveling.

   A few decades ago, professional footballers spent their nights partying. Now, they are much more aware of the benefits of a good night’s sleep.

   The change began in the mid-1990s, when mattress salesman Nick Littlehales contacted the manager of the Manchester United football team, Alex Ferguson, asking whether he had ever considered how sleep affected performance on the football field.

Interested, Ferguson arranged for Littlehales to give a presentation to his team. Before long, the whole team had new mattresses and pillows, and Littlehales soon became football’s leading mattress advisor. In 1998, he supplied mattresses for England’s World Cup team, and at the 2004 Euros, he created individual sleep routines for every player.

   Gradually, club managers began to pay more attention to scientific sleep research, and for good reason. In 2011, a sleep specialist discovered that increasing sleep to 8-10 hours per night massively increased the speed and shot accuracy of basketball players. Other research shows that a single night of inadequate sleep can increase the risk of injury, and 64 hours of bad sleep reduces strength, power and balance, and can even cause the body to eat its own muscles!

What does the passage mainly discuss?