Every day people throw away a lot of household garbage – paper, cans, kitchen waste, used batteries and glass     1    sorting it. There are many problems     2    (cause) by unsorted garbage. On one hand, it’s     3    great waste of resources. On the other hand, the disposal of unsorted garbage can cause serious environmental pollution,     4    does harm to people’s health. Now our government has realized the importance of garbage sorting. So far many activities     5    (hold) to teach people how to sort garbage     6    (proper).

People in cities, like Beijing and Shanghai, are required to sort garbage into four categories— kitchen waste,     7    (danger) waste, recyclable waste and other waste. Also, they can get certain points for sorting their garbage. When they accumulate enough points, they can go to the community     8    (exchange) them for some gifts of daily use. However, still a lot of people in China lack the     9    (aware) of garbage sorting. Changing people’s mindsets and habits will take a long time. But once one person     10    (develop) the habit of garbage sorting, more may be influenced to do the same.

A CCTV journalist succeeded in arousing a heated discussion among netizens by asking people whether they were happy. The responses to the question were various, even some quite funny ones     1     (include). Although people played jokes     2     the answers, it did not take long     3     they began to figure out the true meanings of happiness.

It is certain that people’s views on happiness     4     (affect) greatly by their own life experience. Unfortunately, too many people refer to being rich as happiness and there is no sign of     5     decrease in the number of those who are voluntarily at the mercy of wealth. Some people whose     6     (intend) is to make big money appreciate     7     (be) given any chance to multiply their income, believing that is     8     their happiness lies. Some are eager to inherit their parents’ property, especially those who are known as silver-spoon kids. Even worse, some would rather break the law to satisfy their financial desire or seek their fortune     9     (legal).

In my opinion, happiness is not about pursuing wealth merely but about admiring the beautiful things in life. Therefore, live your life     10     the fullest and be happy.

Close to 70 percent of the world’s population will live in cities by the year 2050. Experts warn that population     1    (grow) will worsen housing crises in some areas.

Large cities around the world already struggle with housing problems. In some neighborhoods, rising house prices have forced     2     poor from their homes. Many poor people now live in shelters or on the street.

People     3    (move) to large cities now not just for high-paying jobs. Many are also looking for the chance to live and work with other people, career opportunity and access to much     4    (good) resources. Some countries have built new capital cities     5    (help) ease overcrowding. These efforts help, but do not solve the problem.

The report says that by 2030, the world will have had 43 very large     6    (city), each with more than10 million people.

Tjada McKenna,     7     is chief operating officer for an aid group, says that the ability to own a home in many countries is often difficult,     8    (especial) for women and minority groups.

Every city is different in     9    (deal) with development problems. Each one has its own economic forces at work and its own history. Experts say that answers     10     the housing crisis and other problems must be developed city by city.

Tens of millions of people carry their smartphones with them everywhere they go, the bathroom    1    (include). Our phones are always within our grasp,    2    means they are also constantly    3    (expose) to whatever bacteria we may have accumulated on our hands.    4    (fortunate), a new survey of 1,200 Americans and their cleaning habits    5    (find) that one in four have never cleaned their phones. To find out just    6    dirty most phones become, researchers estimate that a regularly    7    (use) smartphone that has never been cleaned may hold more bacteria     8    an entire household bathroom. According to the survey, conducted by the company Vital Vio, it's common for smartphones    9    (come) into contact with various forms of bacteria, including strep, staph, and E.coli. Suddenly,     10    (eat)a sandwich in your bathroom doesn't sound so bad.

There   are   no precise     1    (criterion) that can be used to judge what is beautiful. As the anthropologist (人类学家) Margaret Mead once put     2    , standards and ideas of beauty change across   time.   Nowadays,   some   costumes   and   actions   once       3    (regard) as beauty in the 19th-century is not considered healthy or attractive, while something   fashionable   now   had   different   functions in the past.

There is no     4    (consist) view on beauty, as beauty is influenced by culture and it is even     5    (whole) different in the eyes of beholders. In some countries, young women follow slimming diets to lose extra kilos     6    preparation for their wedding day. In other cultures, looking thin for a husband-to-be is   not     7    a woman desires at all.

    8    different, one thing is certain—it is inner beauty that requires us to truly see. That is     9    (say), beauty is accompanied by an attraction to something deeper within a person, which can     10    (find) in a wide range of personal qualities.

The total wealth of the world’s 26 richest people is equal to the total wealth of the 3.8 billion poorest. This     1     (shock) gap is in a report from the charity Oxfam. It says that since 2008, the number of billionaires       2     (double). They are also getting $2.5 billion richer every day. This is in contrast to the poorest half of the planet. Their wealth is       3     (gradual) shrinking as prices and rents rise and wages fall. Oxfam’s report shows the growing gap       4     the world’s rich and poor and the increasing gap in wealth       5     (equal).

The report says that most of the world’s wealthy people made       6     (they) money from technology companies. The world’s richest person, Amazon CEO Jeff Bezos,       7     (be) worth $100 billion. This is 100 times more       8     Ethiopia’s annual health budget. Oxfam says it is time       9     (fix) this imbalance in wealth. It wants fairer levels of income tax, and more tax on personal earnings and company profits. It also wants an end to tax avoidance plans       10     big companies and the super-rich often use. It says that in many countries, only the rich could afford quality education and healthcare.

According to a Pew Research Center's study in 2017, about 40 percent of Americans say they     1    have a gun or live in a household with one. And the US has the highest rate of     2    （kill） related to guns in the developed world. Over 11,000 people in the US died as a result of firearms in 2016, reported the BBC.

The large number of deaths    3    （involve）guns has led to increasing support    4    stricter gun control among young people. According to a study published by the website Abodo in October, about 80 percent of Americans    5    （age）18 to 35 believe the country has a major problem of mass shootings. About 78 percent of young people think    6    is too easy to buy a gun and 59 percent believe that gun violence would decrease if there    7    （be）stricter gun laws,     8    would help prevent    9    （necessary） events.

    10     the road to stricter gun control will certainly not be a smooth one.

Is It the Pig from Angry Birds?

An ancient clay pig statue has become     1     hot topic, for it looked exactly like Green Pig, a main character in Angry Birds, a popular mobile game. The artwork     2     (discover)under the ruins of an ancient settlement     3     (date)back nearly 5,000 years in south-western China.

Archaeologists(考古学家）found the tiny pig statue     4     (accident)while digging in the remains of a small ancient community outside Guanghan in Sichuan province.

The village was situated about eight kilometres outside Sanxingdui, a Bronze Age kingdom.     5     likely came into being around 5,000 years ago, and the pig statue is thought to be 3,200 years old. The pig statue has been described     6     “cute,vivid and delicate” by the researchers, who say it represents the advanced standards of the region’s prehistoric residents.

Chinese Internet users expressed their amazement. On Weibo, one person expressed his     7     (admire) excitedly: “It is the pig from Angry Birds!” Another commenter joked: “The pig in Angry Birds. You have infringed (侵犯) the copyright.”

The research team claimed     8     (find) tracks of continuous human activity on this site from 5,000 years ago to the    9     (dynasty) of Ming and Qing. Officials plan to dig 7,000 square metres of the site, which is officially named Guanghan Joint Ruins. By the end of June, they     10     (dig) 4,500 square metres.

Last week, 100 restaurants across Shanghai advocated the use of serving utensils(器皿), as it is a key point for the control and       1    (prevent) of the COVID-19.

Chinese people often eat together and share their     2    (dish) with others. The new system suggests     3    (add) separate chopsticks and spoons for serving when people dine together. Such a change of etiquette(礼仪) allows diners     4    (avoid) using their own chopsticks to pick food from the same dishes, and therefore     5    (great) reduces the chances of transmission of many diseases.

Many restaurants     6    (adopt) the policy after the Municipal Office for Civilized Society published the proposal,     7     also encourages the public to use separate utensils for shared dishes at home.

According to Qu Qi, a person in charge     8     a restaurant in Xuhui, a sign     9    (put ) up on the tables to inform people of the importance of using serving utensils, since eating in was resumed on February 21. The waiters and waitresses are also trained to supply a separate spoon or pair of chopsticks for the diners. So far,     10     service has been well received by the majority of the public.

Recently there has been a heated debate on whether the university should charge a fee to the public who use     1     (it) sports field. People’s attitudes toward it vary from person     2     person.

Most people think that universities should not serve the public. They think universities are not    3     ( complete ) open spaces for the public to use, so charging a fee     4     (be) the most effective way of controlling access and     5     ( make) the most value out of the university’s resources. A high fee would filter (滤除) out most of the visitors who have no desire     6    (use) the sports field for its intended purpose. Besides, universities and their assets are expensive investments, funded by the government and the public, for the education of students and     7       (science) research. It will make sense that members of the public should pay a price     8     they want to use these facilities,     9     might cause stress on the university’s resources. They also think neighboring residents have other     10     (option) for recreation, such as public parks,if they do not want to pay money to use the sports field.