2 . Are you facing a situation that looks impossible to fix?

In 1969,the pollution was terrible along the Cuyahoga River Cleveland, Ohio. It    1    (be) unimaginable that it could ever be cleaned up. The river was so polluted that it    2    (actual) caught fire and burned. Now, years later, this river is one of    3    most outstanding（杰出的）examples of environmental cleanup.

But the river wasn’t changed in a few days    4    even a few months. It took years of work     5    (reduce) the industrial pollution and clean the water. Finally, that hard work paid off and now the water in the river is    6    (clean) than ever.

Maybe you are facing an impossible situation. Maybe you have a habit    7    is driving your family crazy. Possibly you drink too much or don’t know how to control your credit card use. When you face such an impossible situation, don’t you want a quick fix and something to change immediately?

While there are    8    (amaze) stories of instant transformation, for most of us the    9    (change) are gradual and require a lot of effort and work, like cleaning up a polluted river. Just be     10    (patience).

It's really nice to see a herd of Tibetan antelopes on the green grass. However, their population     1     （drop）by more than 50 percent during the 1980s and 1990s.     2     （make）profits, hunters were shooting antelopes. Their habitats were becoming smaller as new roads and railways were built.

In order to save this species from     3     （extinct）, the Chinese government placed it     4     national protection. Many volunteers watched over the antelopes day and night to keep them safe from attacks. Bridges and gates     5     （add）to let the antelopes move     6     （easy）and keep them safe from cars and trains.

Gradually, the antelope population has recovered and in June 2015, the Tibetan antelope was removed from the     7     （endanger）species list. The government, however, does not intend to stop the protection programmes, since     8     threats to the Tibetan antelope have not yet disappeared

In a word,     9     we want to save the planet, we must change our way of life. Only when we learn to exist in harmony with nature can we stop     10     （be）a threat to wildlife and to our planet.

The Dujiangyan is the oldest man-made water system in the world, and a wonder in the development of Chinese agriculture.     1     （build）over 2,200 years ago in what is now Sichuan Province in Southwest China, this amazing engineering     2    （achieve）is still used today.

In ancient times, the region where Dujiangyan now stands     3    （suffer）from regular floods from the Minjiang River.     4    （help）the victims of the flooding, Li Bing,     5     region governor, together with his son, decided to find a solution. Li designed a series of channels built at different levels along Mount Yulei that would take away the floodwaters while leaving the river flowing naturally.     6    （good）still, the extra water could be directed to the dry Chengdu Plain, making     7     suitable for farming.

Once the system     8    （finish）, no more floods happened and the people were able to live     9    （peaceful）. Today, Dujiangyan is admired by scientists from around the world because of one feature. Unlike modern dams,     10     the water is blocked with a huge wall, Dujiangyan still lets waterflow through the Minjiang River naturally, making the ecosystem（生态系统）and fish populations exist in peace.

China’s Liangzhu Archaeological Site     1    (declare) on the list of World Heritage sites on Saturday by UNESCO’s World Heritage Committee during its 43^rd session in Baku, the capital of Azerbaijan.

The site,     2    is located in Yuhang District in Hangzhou City in China’s eastern Zhejiang Province, showcases the civilization of prehistoric rice agriculture between 3,300 B.C.     3     2,300 B.C. The ruins of ancient Liangzhu city were discovered in 2007, and then large dam sites     4    (surround) the Liangzhu ancient city were unearthed continuously after 2009. It was     5     (official) submitted to UNESCO in 2019, hoping to win     6     (recognize) as a World Cultural Heritage Site. The site     7     (include) archaeological remains and unearthed cultural relics of the Liangzhu Ancient City as well as a wetland that covers     8     area of 908. 89 hectares in a plain river network. It is also found that the Liangzhu ancestors started to use characters about 5 ,000 years ago, 1 ,000 years     9     (early) than previously thought, according to Colin Renfrew, a retired professor of archaeology at the University of Cambridge.

The World Heritage Committee added Liangzhu to the UNESCO list    10     (encourage) better protection of the site, considered to be of “outstanding universal value” to humanity.

I felt butterflies in my stomach when I started calligraphy class ten years ago. I wondered what I was doing there. At that moment, I couldn’t have known that I’d just made one of the best     1     (choose) of my life.

I sat down and listened to the teacher     2     (introduce) the tools of the craft. Then it was time for me to try my hand I took up the brush, using the correct gesture,     3     (dip) it in the ink，and carefully wrote “one”     4     Chinese.

After nearly five years of practicing. I started to make versions of well-known poems. Calligraphy seemed like a bridge,     5     connected me to authors from centuries past. Stroke(笔画)by stroke, word by word，I could feel their emotions, cherished my own peace and learned     6     (appreciate) my daily life.

Now, calligraphy is not just     7     hobby, it is a way to remove myself from the     8     (worry) of life. Rolling out the paper, I can write for a whole day. Calligraphy     9     (able) me to balance my busy schedule and live    10     (peace).

When foreigners negotiate, or register in certain areas of China, they may be     1    (surprise) at Chinese’s special fondness and preference for seals. To Chinese, seals are an art of deep cultural roots,     2     combines the essence of both calligraphy(书法) and sculpture and inspires generations to study, to appreciate and to collect.

It is believed that seals came out as early     3     8,000 years ago after our ancestors could make pottery wares(陶瓷)and had private property. They were assumed to make marks on     4    (they) own possessions to prevent them from being stolen. When the first dynasty     5    (found),the king began to use seals to empower(授权)and to show lordly credits. Only the king’s special seal was then called “Xi”,     6    (represent) the highest authority. The first emperor of China, Qin Shi Huang, had his “Xi”    7    (make) out of the invaluable and beautiful jade “Heshi Bi”.

Then the local governments also needed seals for     8     same function. Meanwhile, private seals were carved in a variety of lucky     9    (character)and vivid animal patterns.    10    (gradual). the sphragistics (印章学) came into being.

Eating a big breakfast could help you bum double calories than if you eat a larger meal at dinner.

Researchers at Lubeck University found filling up in the morning     1     (boost) a metabolism (代谢) process known as diet-induced thermogenesis (饮食生热效应). DIT refers to the number of calories the body expends to heat the body and digest food. It was shown to be twice as high for those     2     ate more at breakfast than at dinner. The findings published in the Journal of Clinical Endocrinology and Metabolism     3     (base) on a laboratory experiment of 16 men. The study adds to increasing evidence that the best way of losing weight is to eat your     4    (large) meal in the morning — and your smallest in the evening.

Dr Richter said: “Eating more at breakfast instead of dinner could prevent obesity     5    high blood sugar. Both obesity and high blood sugar can lead to illnesses     6     (include) cancer, cardiovascular disease and diabetes.”

DIT can differ depending on a     7     (person) mealtime and is     8     (general) slower in the evening and at night. Dr Richter said: “We recommend patients with obesity as well as     9    (health) people eat a large breakfast rather than a large dinner     10     (reduce) body weight and prevent metabolic diseases.”