My husband and I were paying a visit    1    my parents in Tucson. We went to a fast-food restaurant for dinner together. My husband went to the counter(柜台)    2    (order) dishes and I stood with my parents.

My dad is 90 years old. He can hardly see very well and walks with a stick. I was looking around in the restaurant,    3    (wait) to sit at the first table that was    4    (convenient) than others. A woman who was sitting with her son saw me and asked me to come to her. With a puzzled look on my face, I pointed to     5    (me)and said, “Me?” . She    6    (nod) and said, “Yes, you.” I walked to the table and she said, “Bring your family here. I can finish eating at the counter. My son is in    7    hurry to leave anyway.” My eyes    8    (fill) with tears as she wiped down the table and guided my dad to the seat.

I always believe that there are    9    (nature) kind people in this world. This woman has set a good example to her son,     10    is a really lucky guy.

Waking up at 7 in the morning, 25-year-old Fan Yupei cleans up,     1     (water) flowers in the courtyard, and then opens the door of her Jun porcelain (钧瓷) production studio, ready for a new day’s business.

Life in her hometown, Shenhou town, in Yuzhou City, is much     2     (happy) for Fan. She started her own studio with her husband,     3     quit his job in Beijing. Jun porcelain is one of the top five Chinese porcelains,     4     (date) back to the Song Dynasty. It is famous for     5     (it) change of colors when heated in kilns (窑). In 2008, it     6    (list) as a state-level intangible culture heritage (非物质文化遗产).

Shenhou town is home     7     Jun porcelains. Recently, the local government of Yuzhou city has taken a series of measures     8     (promote) such production. Now Fan’s husband is in charge of Jun porcelain making while she is responsible for sales. Her recent goal is to own     9     shop where they can sell their own production. With more and more tourists visiting Shenhou every day, Fan has the     10     (confident) that Jun porcelain will gain greater popularity in the future.

Have you ever asked yourself why children go to school? You will    1    (probable)say that they go to learn languages, history, science and some other knowledge. That is quite true, but why do they learn these things?

We send our children to school to prepare them    2    the future when they grow up and have to work for    3    (they) . Nearly everything they study at school has some practical use in their life. But is that    4    only reason why they go to school?

There is more in education    5    just learning facts. We go to school to learn how to learn, so that when we have left school we can continue to learn. A man    6    really knows how to learn will always be successful, because when he has to do something new, he will not only be able to do it well himself, he will also be able    7    (teach) others how to do it in the best way. One    8    (educate)person, on the other hand, is either unable to do something new, or just    9    (do) it badly. The purpose of schools is not to teach languages, history, science, etc, but to teach pupils the way    10    (learn).

According to a report released by the United Nations, there were 815 million undernourished（营养不良的）people in the world in 2016. Yet, 1.3 billion tons of food     1    （waste）every year around the world， which is about one-third of all food produced each year, according to the UN's Food and Agriculture Organization.

    2    （get）a better understanding of different countries’ food waste problems, the Economist Intelligence Unit recently surveyed 34 nations according to their food system sustainability（可持续性）. According to the report，France topped the list of food sustainability，followed by Japan and Germany.

The    3    （perform）of these countries is largely related to their policies to deal with food waste. For example，France was the first country to pass laws to ban（禁止）food waste. In France, it's illegal for supermarkets to throw away    4    （sell）food, and French restaurants must provide doggy bags for people's leftovers.

Germany is trying to deal with the problem by reforming expiration dates（到期日）. “We found in our study that many people believed they should throw away products    5    the `best before' date has expired,” Martin Kranert, chair of Stuttgart University's waste management department, told Deutsche Welle. “This is not at all case, and such a lack of knowledge is the first thing     6    has to change.”

Some countries are still falling behind when it comes to     7    （prevent）food waste, however. For example, the United Arab Emirates wastes the most food, with each of its citizens throwing away about 1,000 kilograms every year     8    average.

China has been working hard to reduce food waste. In early 2013, the country's Clean Your Plate Campaign started,     9    （encourage）people not to waste anything on their plate.

“If people are more aware of the amount of food waste they produce and everyone plays a role in reducing their personal food waste, we can do     10    （well）as a community,” Joyce Chan from the Foodlink Foundation, a Hong Kong charity dedicated to reducing food waste, told China Daily.

Ball games are a big source of modern amusement. But they're nothing new. For instance, consider a 4,500-year-old ball     1    (find) in a child's tomb in Egypt or 3.600-year-old rubber balls from Central America-where the competitors were asked to play the balls with their hips(臀部）.

So far, researchers     2    (make) sure of a date of the oldest sporting balls in Europe or Asia: three balls, dug up from the tombs of horsemen in the deserts of northwestern China and crafted three thousand     3    (year) ago.

＂We are quite sure they were used in some sort of bat-and-ball game."Patrick Wertmann is an expert at the University of Zurich     4     analyzed the ancient sporting equipment. The balls are about three inches in diameter and filled     5    leather hair. “And then, also,     6    (look) at the Chinese character of "ball" itself, you'll find it quite     7    (interest) because this character is made up of the ideograms(表意文字）of hair and leather.”

As for how this ancient ball-and-stick game     8     （play)? “lt could be something like polo. But it could also be something like     9     early form of golf.

Since we don't have any textural evidence and we don't have any sticks from the same period, we don't really know     10    （exact).”

More than twenty American states ban smoking in public.     1     study has proved that smoke-free laws can reduce a major effect of tobacco—heart disease.The study     2     (take) place in Pueblo, Colorado several years ago. In some states, there were 396 heart attack     3     (patient) in the year before the ban in hospitals.

However,18 months     4     the ban, the number was 237. Smoking in enclosed (封闭的) places is very     5     (harm) to non-smoke. Adults may think they are     6     (actual) protecting their children from second-hand smoke when they smoke outside their homes, or when the children are not there. However, researchers     7     (warn) of what they call “third-hand smoke” so far. When you smoke they say, dangerous matter from tobacco smoke gets into     8     (you) hair and clothing. Then, when you touch a baby, the baby comes into contact with that poisonous matter. The researchers also found that people,     9     agreed that smoke was bad for children’s health, were more likely to have restriction on     10     (smoke) in their homes than others.

The Song Dynasty was an exciting period in Chinese history. At the height of    1     (it)   power, the country’s population doubled. A fast growing economy and strong support    2     Chinese rulers helped the development of technology and the expansion of knowledge. During this period, a huge number of technological innovations emerged. Many of them had significant practical    3     (apply).

One particular invention from this period made a mark on the world: moveable type (活字印刷术) — that is, individual blocks that could print a single letter and then     4    (use) again. This technology finally ended up in Europe several centuries later. The Chinese language uses a huge number of characters,    5     most European languages use individual letters that combine into   words. Printing texts made up of individual letters    6     (require) fewer blocks. This invention produced an enormous change in     7       (write) communication in Europe and made it easier for a    8     (grow) number of people to learn to read.

The Chinese were also the first to invent the compass,    9     changed how sailors navigated the seas. Together with star charts — another Chinese invention — and maps, the compass made sea travel much    10     (safe).