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.

Did you grow up in one culture, your parents came from another, and you are now living in a     1     (total) different country? If so, then you are a third-culture kid.

The term “third-culture kid”     2     (use) in the 1960s for the first time by Dr. Ruth. She first came across this phenomenon while     3     (research) North American children living in India. In general, third-culture kids benefit     4     their intercultural experience and they often reach excellent academic results.

Yet many     5     (difficulty) may arise from this phenomenon. Third-culture kids may not be able to adapt     6     (they) completely to their new surroundings. Also, they often find it hard     7     (develop) new friendship. Additionally, for a third-culture kid, it is often     8     (easy) to move to a new country than to return to his homeland. For example, after living in Australia for many years, Louis finally returned to the country     9     she was born. She didn’t know anything about current TV shows     10     fashion trends. And she didn’t share the same values as other teens of her age.

Tourism can be both good and bad. Yes, it brings in money     1       the local economy and creates lots of jobs for locals but it may also bring some problems.

One     2     （extreme） big problem is that tourists want to show that they have visited a destination. They have used paint, rocks or even keys to write their names on historical places. Another big problem has been tourists troubling the local people     3     their life. Some tourist walk around and take       4     （picture）of local people without     5     （ask）for their permission（允许）. Some tourists     6     love to have parties stay very late into night, making it difficult for locals to sleep. The number of problems from tourists     7     （be）endless. The only way     8     （solve）those problems is to make sure that you are not one! Be the best, kindest,     9     （polite） tourist. Remember, whenever you step outside your country, you are representing（代表）your country to     10     rest of the world.

Japan's government has lowered the age at which people become adults. It is the first time since 1876 that this     1    (happen). From the year 2022, teenagers will become adults at the age of 18,two years     2    (early) than the age at which adulthood currently legally happens. However, even though the age has been lowered, there     3    (be) still certain things that will not change. The legal age for drinking alcohol,smoking and gambling(赌博）will remain fixed at 20. The new law will enable 18-year-olds to get married without parental     4    (permit),and allow them to apply     5    credit cards.

The new law has been passed in an effort       6    (bring) about social and economic changes in Japan. The government hopes to see     7    increase in the number of young people getting married and starting     8    (family). This will help deal with the nation's decreasing birth rate and ageing population. Greater financial freedom could help promote the economy, which is vital for a government     9    (struggle) to handle the increasing pension and healthcare payments. Many of Japan's young people are more concerned about how the law will affect the traditional Coming of Age Day, a national holiday held in January     10    20-year-olds dress up in traditional kimonos(和服）to celebrate adulthood

A strong password,     1    (consist) of mixed types of characters and numbers, can be     2     pain to create and remember. That’s why so many people set passwords     3    are easy to remember – but also easy for others to guess.

Last month, the password-management firm SplashData,    4     (base) in the US, released its annual list of the 100 worst character     5    (combine). They are from leaks (泄漏) of about five million passwords.

You’ll find that “password”, “baseball” and “iloveyou” are all included on the list. Even the name Donald, the first name of the US President, is on the list. The choice comes as no surprise     6    Donald Trump is always active on the social networking site Twitter.

    7    is common sense to avoid a password of sequential (序列的) numbers if we have important information     8    (protect). Some people make guessing     9     (ridiculous) simple. According to SplashData, the worst of the worst passwords is “123456”; but it     10    (sit) on the top of the worst password list for five years.

British people spend more time watching TV, gaming and using mobile phones and computers than sleeping. The research     1     was conducted by a communication agency found that Britons use technology for 20 minutes     2     (long) than they spend sleeping. The average UK adult uses technology for eight hours and forty-one minutes per day. One of the biggest     3     (reason) for this is broadband and Wi-Fi. People spend more time on the Internet. A large number of people are on the phone or online while    4     (watch) television. Watching television     5     (be) the most popular activity. Adults watch     6     average of three hours a day.

The study looked at technology and groups of different ages. It     7     (find) that six-year-olds understand it the same as 45-year-olds. People understand digital technology most when they are 14 or 15. Technology is changing the way people communicate with each other. Scientists warn that we are becoming more antisocial (孤僻的). They say people are moving away from face-to-face conversations because they are using technology too     8     (frequent). They add that people are becoming     9     (addict) to their smart phones.    10     the other hand, technology also means people are working at home after they finish work and get home from work.

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.

Science experiments can help you to understand the reason behind anything and everything. As we grow up, we get to know many things which we would be     1     (astonish) to see as kids.     2     (make) a kid understand the difference between magic and reality, you need to show him the science behind it. You will not face any difficulty in doing so as they are always eager to know about it. It is a basic human ability to remember things which he     3    (watch)and does by himself. Hence(因此)practical exercises are very important for children in their daily life.

Few things you should keep in mind while     4    (select) the experiments for kids. The     5    (much) important thing is to take a simple concept. If the concept is too difficult,     6    will be difficult for children to finish that experiment. So you should select simple experiments which are right for their age. The other thing is that you need to choose     7     experiments which are not poisonous and with easy    8    (equip)and that can be handled    9    (easy)by your kids. Child's safety should be your priority(优先考虑的事情). I am going to give you some science experiments     10     will help you to make these small kids understand simple facts with complete safety in my next article.

Students have   responsibility to learn well and pay more attention to     1    (learn). If a long reading assignment (任务) is given, teachers expect students to be familiar     2     information in the reading even if they do not discuss it in class or take an examination.

The ideal student     3     (consider) to be one who is motivated to learn for the sake of learning not the one interested only in getting high     4     (grade). Sometimes homework is returned with brief     5     (write) comments but without a grade. Even if a grade is not given, the student is responsible for learning the material distributed.

When research is distributed, the professor expects the student to take it     6     (active) and to complete it with minimum guidance. It is the students’ responsibility to find books in the library. Professors do not have the time     7     (explain) how a university library works. Professors will help students     8     need them, but prefer that their students should not be too dependent on them. In the United States, professors have many other duties besides     9     (teach), such as regulative or research work. Therefore, the time that a professor can spend with a student outside of class is limited. If a student has problems with classroom work, the student should either approach a professor during office hours     10     make an appointment.

In any major Indian city, people are seen with an arm outstretched, mobile phone in hand,     1     (smile) widely and clicking away. Even Prime Minister Narendra Modi is said     2     (love) the selfie (自拍), posting pictures online that he has taken with     3     (variety) world leaders.

But the pursuit of selfie can sometimes have deadly consequences. India is home to     4     highest number of people who have died while taking photos of     5     (they), with 19 of the world’s 49 recorded selfie-linked deaths since 2014.

    6    (early) this month, an 18-year-old college student on a class picnic lost his balance while taking a selfie on top of a rock near a dam. He fell into the water and drowned, along with a classmate     7     jumped in to save him.

Since then, the Indian government     8     (declare) 16 no-selfie zones across Mumbai, warning people    9    taking unnecessary risks. Police have declared “no selfie” in areas considered to be    10    (risk)—particularly along the coastline in spots with no railings or fences. Anyone coming into “no selfie” areas even if they take no photos, will risk a fine of 1,200 rupees ($17.50).