We all know that water is the source of life on Earth. No plant, insect, animal    1    human can survive without it. A new study from the National Institutes of Health highlights how important it is to our health. Researchers find that people    2    drink a lot of water everyday tend to stay     3    (fit) and live longer than those who don’t. The research team say drinking enough water is helpful to people     4    (affect) by illnesses related to ages, like heart and lung diseases. They add that it is more likely for adults    5    (poor) hydrated(补充水分) to show signs of ageing and even die at a younger age.

The researchers look at the health data from about 12, 000 adults over a 30-year period. They studied the information of patients who    6    (visit) a hospital five times in the past ten years. The first three times were when the patients were in    7    (they) 50s, and the last two times were when they were between 70 and 90. Dr. Natalia Dmitrieva, lead researcher of the study, said, “The    8    (result) suggest that proper hydration may slowdown ageing and make a disease-free life longer,” She calls    9    consuming more water, juice, fruit and vegetables with high water content. She said that half of the people worldwide didn’t drink enough in their daily life. According to her     10    (recommend), the average adult needs to drink at least 1.5 liters of water every day.

Longjing tea,    1    ( top) the list of the most ten famous teas in China, is named after its production region- Longjing Village of West Lake. The good environment and water resources have contributed much to the     2    (grow) of the tea, confirming the saying that “Longjing tea is the     3    (good) among all the teas in the world”.

Thanks     4     Emperor Qianlong, the tea has earned a high reputation. The story went that Emperor Qianlong once travelled in Hangzhou and he saw some ladies picking the tea at     5     foot of the mountain. He was so interested in their movements     6    he decided to have a go himself.

While     7    (pick) the tea, he received the news of his mother’s illness, so he carelessly put the leaves in his sleeves and     8    (leave) Hangzhou for Beijing. He visited his mother      9    (immediate) upon his arrival in Beijing, and his mother smelt the fragrance of the tea leaves from his sleeves and wanted to have a taste. After drinking a cup of tea, she found      10     (she) completely refreshed, and she even praised it as a cure for her illness. Since then, it was listed as the tribute tea.

Caffeine, a chemical typically     1     (find) in coffee, has caused a lot of concern because it is one of the few drugs that show up regularly in our food supply. You probably     2     (use) caffeine since childhood. Caffeine was in your first Coke. If you ever enjoyed a chocolate bar, you ate caffeine. Soft drinks are the major source (来源) of caffeine for most children and even some adults.     3     (recent), caffeine has found its way into orange, apple, and other flavored drinks.

Small amounts of caffeine — a cup     4     two of coffee a day — seem safe for most people. However, some people have trouble with even small amounts. One cup of coffee     5     the late afternoon or evening will cause     6    (they) to stay awake almost all night. Larger amounts of caffeine can cause a problem     7     (call) caffeinism. You get very nervous and you can’t sleep.

Caffeine may be the possible     8     (explain) for some birth defects (缺陷) in humans, too. One study showed that women who drank a lot of coffee, like eight or more cups per day,     9     they were pregnant were more likely to have children     10     birth defects.

China will become the guest country of honor for the 37th International Kite Festival in Berck-sur-Mer from April 20 to 28. It is the first time that the festival     1     (introduce) the concept of guest countries since its establishment in 1987.

During the nine-day event, the China Cultural Center in Paris will join hands     2     Weifang City in Shandong Province—known as the “kite capital of the world”, to showcase the most authentic Chinese kite art and cultural experience to the audience. Various cultural activities will take center stage,     3     (involve) kite competitions, cultural performances and     4     (workshop) on intangible cultural heritage (非物质文化遗产).

The International Kite Festival in Berck-sur-Mer is the largest and most     5     (influence) kite-themed event in France. In addition to regular kite displays, this year’s festival will debut the international kite stunt competition,     6     (call) “The World Kite Cup Berck-sur-Mer”. Kite-flying masters from ten countries and regions will compete for the world champion title in a showdown of skills and     7     (create).

    8     (kick) off the festival on April 20, a 100-meter-long dragon kite will take flight, followed by     9     series of activities, like dragon and lion dance performances, martial arts demonstrations, a tea ceremony, calligraphy exhibitions     10     traditional Chinese folk music performances.

A year     1     (divide) into altogether 24 solar terms by the Chinese lunar calendar. Start of Spring, the first solar term of the year, begins in early February.     2     lifts the curtain of spring, after which everything turns green and becomes     3     (energy).

Spring is the best season for kite-flying. With     4     available history of more than 2,000 years, the traditional folk activity can help build up one’s     5     (strong) and prevent disease. A breath of fresh air outside can release the dirty smell     6     (collect) in winter.

In China, an old legend goes     7     the egg can be set upright on the first day of the Start of Spring. But according to astronomers and physicists,     8     (set) the egg upright has nothing to do with time, but with mechanics. The most important thing is to shift the egg’s center of gravity to the     9     (low) part of the egg. In this way, the trick is holding the egg until the yolk (蛋黄) sinks as much as possible. For this, people should choose an egg about 4 or 5 days old,     10     yolk is likely to sink down.

The Chinese Government     1    (create) the Chinese Farmers' Harvest Festival in 2018,     2    (make) it the first time that a national festival has been specially set up for farmers. The festival will be celebrated     3    (annual) on the autumnal equinox(秋分).

The action shows the government's concern about agriculture and its people to draw the whole society's attention to Chinese farmers,     4     work hard to strengthen the country's development.

The festival falling on the autumnal equinox also shows respect for traditional 24 solar terms which     5    (follow) by Chinese people since about 2,200 years ago. Meanwhile, it     6    (mirror) Chinese people's knowledge of seasonal changes in nature and their willingness to adapt to natural rules. Although climates and crops differ in different parts of China, most crops mature in autumn,     7     thus it's the best time to celebrate the harvest.

The festival     8    (accompany) by certain rituals(仪式) is especially important to China,     9     agricultural country with thousands of years of history. A whole year's hard work brings big harvests, filling fanners with joy. Not only will this festival celebrate harvests, but it will be a reminder that more attention needs to be paid     10     agriculture and famers, as well as traditional culture.