Emerging evidence in humans suggests a     1     (typical) Western high-fat, high-sugar junk food diet can quickly weaken your brain's appetite control.

After offering volunteers a week-long binge (大吃大喝) of waffles, milkshakes and similarly rich foods, researchers in Australia found young and healthy ones scored worse on memory tests and experienced a     2     (great) desire to eat junk food, even when they were already full.

The findings suggest something is special in the hippocampus (海马体)-a region of the brain     3     supports memory and helps to regulate appetite. When we are full, the hippocampus is thought to quieten down our memories of delicious food, thereby     4     (reduce) our appetite. When it’s interrupted,     5     control can be seriously damaged. Over the years, extensive research on     6     (mouse) has found the function of the hippocampus is very sensitive to junk food, but recently this has been observed only in young and healthy humans.

In 2017, after a week of Western-style breakfasts of     7     (toast) sandwiches and milkshakes, researchers found participants performed worse on learning and memory tests which are typically dependent     8     the hippocampus.

Now, in this latest study the scientists of the team     9     (find) that not only do such high-fat, high-sugar diets impair memory in humans, but they appear to directly affect our ability     10     (control) our appetite.

For almost a month, Li Man has been working at an altitude of over 2, 000 meters, tirelessly carrying a medical rescue kit on her back     1     (weigh) about 15 kilograms.

As one of the 38 Chinese rescue staff on duty to protect the para athletes, Li and her team members call     2     (they) the “ski doctors”. “We come from different hospitals and departments     3     (ensure) rescue work is as comprehensive as possible,” said Li,    4     comes from the China Rehabilitation Research Center in Beijing. She     5     (remain) in Yanqing district since January.

With competitors capable of hitting top speeds of up     6     100 kilometers per hour, para Alpine skiing is a dangerous sport. Once emergency happens, the athletes need doctors immediately. Ski doctors     7     (require) to reach an injured person within four minutes, but in fact, often arrive within one minute. “Since 2018, we’ve visited a resort for ski training for around a month each year to make sure that we could reach the injured people as fast and as     8     (safe) as possible,” said Li. Li added that they have been given     9     (profession) training for first aid, and online and offline English training to make sure that they can communicate smoothly with foreign athletes and staff in international    10     (event). She hopes that China’s ski medical rescue system will continue to grow and more recruits will join.

Airparks are neighborhoods designed     1    (specific) for people who have their own light airplanes and want to keep them     2    (park) in their driveways.

There are roughly 650 airparks around the world. So why do so few people know they exist? It may have something to do with the fact     3     most of us can’t afford our own personal airplane, let alone buy a house to accommodate it. Living in one of these airparks     4    (be) very expensive. For example, one of the     5    (world) nicest airparks in California Cameron Airpark Estates is currently listed on Zillow for $1.5 million. That’s the price you pay for living in a place where light airplanes are as common, if not more so     6     cars.

So how do airparks differ from ordinary neighborhoods? Driving through one of them, you’re bound     7    (notice) that every family has a parking lot for their airplanes. The streets are wide enough to fit the wings of a light aircraft, about 100 feet in     8    (wide). Road signs and mailboxes     9    (position) unusually low to the ground to avoid getting broken by     10     wings of the airplanes.

The annual Harbin International Ice and Snow Sculpture Festival,     1     officially opened on January 5 and will run through next month, has turned the city in northeastern     2     (China) Heilongjiang province into a wonderland.

Last year, more than a million visitors     3     (attract) to Harbin to see the huge sculptures     4     (create) from huge ice blocks and tons of snow by artists from 12 countries.

In the weeks     5     (lead) up to the latest festival, hundreds of workers spent hours cutting blocks of ice from the nearby Songhua River. Each piece weighed up to 1,554 pounds and almost 261,500m³ of ice were cut     6     transported on-site.

When the ice and snow sculptures are lit up by thousands of lanterns, they are very     7     (impress), with the massive main sculpture measuring 108 feet in height and over 325 feet in     8     (long). From fantasy castles and creatures to recreations of iconic monuments, the incredible ice and snow sculptures allow the public to relive     9     (they) childhood. Many visitors say it is     10     once-in-a-lifetime experience for them!

The combination of music and study has long been     1     source of disagreement between adults and children.Parents and teachers alike maintain that     2    (silent)is important when learning, whereas youngsters insist that     3    (they)favourite sounds help them concentrate.

Now a study shows that the     4    (grown-up)have been right all along.Psychologists in Florida tested how fast students wrote essays     5     and without music in the background .They     6    (find)that the sounds slowed progress down by about sixty words per hour. “This demonstrates     7    (clear)that it is difficult to cope with listening and writing at the same time,”said Dr.Sarah.She also came to the conclusion     8     it is a myth that instrumental music is less disturbing than songs. “All types of music had the same effect,” she said in her report. “One’s ability to pay attention and write fluently is likely     9     (disturb) by both songs and instrumental music,” she added.

Dr. Sarah claimed the research demonstrated that the idea that music could improve performance was wrong. “Writing an essay is a complex task. You     10     (recall) information and putting it in order. But what is particularly worrying is that more and more teenagers are studying in front of the television.”

Qingdao International Beer Festival has become a major event in the beautiful city. The first festival took place in 1991. It is now held once a year from the end of July to the end of August,     1     (last) for about one month. Qingdao is the     2     (large) beer production base in China and the festival provides a great opportunity     3     (show) the city’s unique characteristics.

    4     time passing by, Qingdao International Beer Festival has become a nationally     5     (recognize) event, and it combines together aspects of tourism, culture and sport. As one of the most important     6     (festival) of China, it has a worldwide reputation and attracts millions of people to take part every year. More than 100 brands from all over the world     7     (participate) in the event over the past 16 years successfully. Every year daily performances are given at the Beer Town’s Center Theatre,     8     colorful fountains, hi-tech laser shows and dramatic audio effects excite audiences. Whether walking on the roads, shopping in the local stores     9     even catching a ride in a taxi, you will constantly hear people talking about the festival.

    10     (obvious), after 16 years of development, the festival has become part of local people’s daily lives.