There is a growing interest in rock climbing. Recently there    1    (be) an improvement in technology and techniques to perform it. The sport is getting more    2    (attract) to many people. Although rock climbing has risks and physical challenges, people still have several reasons to take it up.

Some sportsmen feel that rock climbing can never become boring. This is because you have different places to go climbing. Additionally, there are several challenging routes to climb. If you are tired    3    walls at your location, you may visit elsewhere    4    (experience) other challenging walls.

    5    (obvious), it offers great fun and adventure to people when they go high up on walls. When they push themselves beyond the expected limits, they get    6    sense of achievement. Many people feel that rock climbing also gives them a feeling of    7    (free), as they can go wherever they want.

There are many sportsmen    8    also lake rock climbing as a physical challenge where they always move up the levels. After    9    (cross) a set level, they move to the next and then to the next. And they can always give a fight to their previously achieved    10    (goal). It all depends on their physical fitness and skill levels.

On a quiet morning, about 70 people were practicing the ancient art of tai chi, outside of the library in Salt Lake City, Utah. They are not    1     well-trained   group of exercisers,   but rather a class of participants who are    2    (most) homeless. The class focuses    3     (little) on mastering the exercise and more on    4    (build) a community. People have said the class relieves their stress, encourages them to get into a routine and make new friends.

Bernie   and Marita Hart, a    5    (retire) couple, began to run the free program   three years ago. They started it by approaching   homeless people    6     were pushing grocery carts near the Salt Lake City Public Library and inviting them to try    7     Hart said her   favorite part of the program has been watching the friendships among participants. They love seeing the positive impact the class    8    (have) on people's lives.

When the Harts are out of town, tai chi does not stop. Attendees take turns teaching the classes.

"Homeless people    9    (tell) what to do every place they go, but we want to encourage them   to   be    10    (leader)," Bernie   Hart   said. "They   don't   need   sympathy,   they   need something that works."

Olympic and Paralympic medals for the Tokyo 2020 Games will be made from recycled mobile phones donated by the public.

Olympic host cities have     1     (tradition) obtained the metal from mining firms. But Japan,     2     lacks its own mineral resources, is keen on taking the theme of a sustainable future a step     3     (far).

“A project which allows the people of Japan     4     (participate) in creating the medals is really good, and helps raise the environmental awareness of our citizens,” said Tokyo 2020 sports     5     (direct) Koji Murofushi. “    6     the resources of our earth are limited, we need to recycle more and avoid waste. This program is setting an example ”

Collection boxes have been placed in local offices and telecom stores and they will remain there until the metal required     7     (collect).

Members of the organizing committee put forward the idea    8     government officials and companies earlier this year and won their support.

As a result, the medals hanging around Olympic winners’ necks will carry even more meaning than usual. People’s personal memories, once     9     (store) in their smartphones and other handheld devices, will take the round shape of an Olympic medal, one of the most precious     10     (prize) in sport.

Up to 82 percent of children with healthy mothers are not easy to be obese（肥胖的）, according to research. A mother,     1     has a healthy weight, exercises regularly, eats a healthy diet, doesn’t smoke and only     2    (drink) wine in moderation, is significantly less likely     3    (have)a fat child, scientists say.

And research suggests it could be more to do with nurture(养育)    4     nature, as a mother's lifestyle appears     5    (direct) linked to the health of her child. When both mother and child follow a healthy lifestyle, the risk of obesity     6    (reduce)even more, the study of more than 24,000 children found.

The study examined the medical history and lifestyles of more than 24,000 children aged nine     7     fourteen, born to almost 17,000 women in the US. Researchers looked at the link between overall mother health and likelihood of a child     8    (be) obese.

The mother's health was judged on her height-to-weight ratio(比例), her diet, amount of physical     9    (active), smoking status and how much alcohol she drank. A healthy weight and diet, regular exercise, no smoking and moderate drinking all reduce the chance of a woman having     10     obese child.

According to a review of evidence in a medical journal, runners live three years     1    (long) than non-runners. You don't have to run fast or for long    2    (see)the benefit. You may drink, smoke, be overweight and still reduce your risk of     3     (die) early by running. While running regularly can't make you live forever, the review says it     4     (be) more effective at lengthening life    5     walking, cycling or swimming. Two of the authors of the review also made a study published in 2014    6    showed a mere five to 10 minutes A day of running reduced the risk of heart disease and early deaths from all     7    (cause).

The best exercise is one that you enjoy and will do. But otherwise…   it's probably running. To avoid knee pain, you can run on soft surfaces, do exercises to    8    (strength)your leg muscles(肌肉),avoid hills and get good running shoes. Running is cheap, easy and it's always    9    (energy).If you are time poor, you need run for only half the time to get the same benefits as other sports, so perhaps we should all give    10    a try.

Hangzhou, as the only candidate city of the 2022 Asian Games, won the bid on September 16th 2015. Thus, it will be the third Chinese city     1     (host) the games.

Hangzhou is a beautiful city     2     a long history. Hosting the Asian Games will give it a new look.     3     the event will cost the government a lot, the benefits are easy for us to see. To the citizens in Hangzhou, the best part of it is     4     it will give us the chance to watch world-class matches and competitions close to home. Secondly, there is no doubt that the event will attract more visitors to enjoy     5     (visit) this wonderful city. At the same time, it is good for the     6     (develop) of the tourism. Meanwhile, as the construction goes on, more roads     7     (build) and the Metro system will be expanded,     8     can reduce traffic jams.

In the next few years, Hangzhou will try its best to prepare     9     for the big show.     10     splendid Hangzhou is waiting to see you in 2022.