1 . Is there a link between social media and depression? Do Facebook and Instagram have a negative impact on your mental health? It’s complicated.

Sometimes, looking through Instagram just makes you feel bad. You try not to envy your friends, but they always seem to be traveling somewhere cool, eating something fancy, or looking cute in perfect just-rolled-out-of-bed hair. On the other hand, there are times when you laugh at funny memes (表情包), catch up with old friends, and feel happy to belong to fun social media communities. Clearly, social media isn’t all bad.

People are increasingly suspecting that there’re potential problems of social media. Things like cyberbullying (网上欺凌) , screen addiction, and being exposed to endless filtered images (美颜) that make it impossible not to make comparisons between yourself and others often make the news. In July, a big study came out in the journal JAMA titled “Association of Screen Time and Depression in Adolescence.” This big headline seems to confirm what a lot of people have been saying — screen time is horrible for young people.

The study followed over 3,800 adolescents over four years as part of a drug and alcohol prevention program. Part of what the investigators measured was the teens’ amount of screen time, including time spent on social media, as well as their levels of depression symptoms. One of their main findings was that higher amounts of social media use were associated with higher levels of depression. That was true both when the researches compared between people and compared each person against their own mental health over time.

Case closed? Not so fast. Before we end the debate once and for all, let’s take a closer look at this and other studies. Let’s ask ourselves: what exactly is the relationship between social media use and depression? It turns out there are several warnings.

1. Why do people sometimes feel bad when looking through Instagram?

A．They lack contact with old friends.	B．They can travel nowhere.
C．They don’t look perfect.	D．They feel unbalanced.

2. Why is the article in journal JAMA mentioned?

A．To comment.

B．To prove.

C．To suggest.

D．To explore.

3. Which may agree with the findings of the study?

A．Depression is related to social media use.

B．Teens’ amount of screen time is limited.

C．It is not easy to tell reasons for depression.

D．Social media contributes to physical health.

4. What’s the best title of the text?

A．How to reduce depression?	B．Does social media cause depression?
C．Shall people reduce screen time?	D．Why is it time to give up social media?

2 . The exhibit, Digital Dunhuang — Tales of Heaven and Earth, which was held at the Hong Kong Heritage Museum, brought to Hong Kong more than 100 exhibits including the visual murals and other related programs that could allow visitors to learn about the art and history of the Mogao Caves in a fun way.

“Dunhuang was an international city, a place where East met West, on the old Silk Road. So the Mogao Caves, which were completed in a period of over 1,000 years, record the ways of life and beliefs of the different peoples that crossed paths there,” explained Fion Lin of Hong Kong Heritage Museum.

Visitors can now get up close and personal with these faraway treasures without having to step into the caves, thanks to the digitization project of the Dunhuang Academy, a pioneer that has made great progress in the digitization and 3D scanning of the Dunhuang treasures.

“Studies have shown that in a cave, both temperature and CO₂ concentration level can rise with 15 tourists inside for ten minutes. As a result, the wall paintings are going to eventually fade. Digital technology has helped to strike a balance between sharing the treasures and protecting them,” said Lin.

However, digitization of the caves faces many challenges such as poor lighting and rough wall surfaces. On average, 40,000 pictures have to be taken to cover 300 m². Great amount of efforts have been made to piece the pictures together. What the exhibition presented is the result of years of hard work.

During the exhibition period, a mini display on Dunhuang music culture was also being held at the Museum for public participation.

1. What could visitors see at the Digital Dunhuang exhibit?

A．The Mogao Caves.	B．About 40,000 Dunhuang pictures.
C．Digital Dunhuang wall paintings.	D．Ancient records of Dunhuang.

2. What is the significance of the digitization project of the Dunhuang Academy?

A．It helps Dunhuang become an international city.

B．It lets people better appreciate the Dunhuang art.

C．It is effective in cutting the CO₂ level in the caves.

D．It attracts more tourists from East and West to Hong Kong.

3. What do we know about the Dunhuang wall paintings?

A．They are brightly lit.	B．They are very rough.
C．It is very hard to protect them.	D．It is impossible for the tourists to see them.

4. Where can you find the evidence that supports “digitization of the caves isn’t easy”?

A．In paragraph 2.	B．In paragraph 3.
C．In paragraph 4.	D．In paragraph 5.

3 . The most famous war movies reflect the American public’s continuous fascination with World War Ⅱ and the Vietnam War. Many movies of this kind have been well­received when they were first shown, but few of them have enjoyed lasting fame and popularity. The films on the list of the five most famous war movies still remain fresh and are popular among many people.

The Longest Day

An all­star cast recreates D­Day and the Normandy attack, the greatest landing and aerial (空中的) invasion in history. This is probably the most famous war movie because of the large number of big stars who have roles in the film.

Apocalypse Now

This is a famous war movie because of its description of the Vietnam War and excellent performance from Marlon Brando, Martin Sheen and Robert Duvall. The film, full of memorable scenes and quotes, is widely viewed as a masterpiece of movie making.

The Dirty Dozen

Lee Marvin, playing an officer who thinks and acts independently, is appointed to train twelve prisoners, most of whom have been sentenced to death, to go on a suicide mission to kill several Nazi generals. If any of the men makes it back, they may get a pardon. This is one of the most popular war movies ever made.

Platoon

This famous war movie is the fictional account of a platoon (排) in Vietnam that is divided into two competing groups. The plot is partly based on the director Oliver Stone’s real life experiences.

Midway

This is probably the most famous war movie ever made about navy. It’s based on the battle between Japanese and American aircraft carrier groups near Hawaii in World War Ⅱ that resulted in a decisive American victory.

1. What are the most important themes of the movies mentioned above?

A．World War Ⅱ and the Vietnam War.

B．Competitions in the Vietnam War.

C．Fights between Nazi generals and soldiers.

D．D­Day landing and the Normandy attack.

2. The text is meant to ________．

A．describe five most famous movie posters

B．choose the best war movie among the five

C．introduce five masterpieces of American war films

D．celebrate the success of the five American war films

3. What can we infer from the underlined sentence?

A．The prisoners will be punished if they fail.

B．The prisoners might be willing to have a try.

C．The prisoners might be scared and run away.

D．The prisoners have to take Nazi generals back.

4 . We humans love to stare into our smart devices. We gaze for hours—about 10 hours and 39 minutes a day—at our computers, smartphones, tablets and televisions. Is all this staring bad for us?   It might be, mainly because as we stare at our devices we are exposing ourselves to blue light.

Blue light is a type of electromagnetic radiation with a very short wavelength that produces a high amount of energy. While it’s true that light can damage our eyes under certain circumstances, there’s no scientific evidence suggesting that blue light is harmful to our eyes. But many people still think it is, which is why blue-light-blocking glasses are so popular. So, do the glasses work?

“Everyone is very concerned that blue light may be causing damage to the eye, but there’s no evidence that it may be causing serious damage, ” Dr. Rahul Khurana, a clinical spokesman, told Business Insider.

Blue light exposure is nothing new. In fact, the sun is the largest source of blue light. Moreover, blue light is also present in LED light. But if blue light isn’t harmful, then why are we constantly rubbing our eyes when we’re looking at our screens?   The answer is eyestrain (眼疲劳). More than 60 percent of people experience eye problems associated with digital eyestrain. And blue light, it seems isn’t the cause. Instead, our eyes are so strained because most of us blink less when we stare at our digital devices. So, if eyestrain is the real issue, blue-light-blocking glasses are probably of little use.

1. What do we know about blue light?

A．It has the shortest wavelength.

B．It’s a kind of nuclear radiation.

C．It consumes a great deal of energy.

D．It may come from electronic devices.

2. What causes the popularity of blue-light-blocking glasses?

A．Evidence of their benefits to eyes.

B．Widespread use of smart devices.

C．Belief in blue light’s harmful effect.

D．Scientific understanding of blue light.

3. What can be inferred from Paragraph 4?

A．Rubbing eyes makes people strained.

B．Blue light exposure is hardly avoidable.

C．Blue light may connect with tired eyes.

D．Eye problems are not easy to deal with.

4. According to the text, wearing blue-light-blocking glasses may be______.

A．useless	B．harmful
C．tiring	D．beneficial

5 . Although most games have winners and losers, the goal of sports is not to win every game. The real goals include getting exercise, having fun, and learning important social skills, like sportsmanship.

Good sportsmanship is all about respect. Good sports (有体育精神的人) respect their teammates and also their opponents. They respect their coaches, and they also respect the referees or other officials involved in their games.     1     They shout at their teammates and they talk back to coaches or referees.

Kids usually learn sportsmanship good and bad from the adults in their lives.     2     If parents and coaches show disrespect for other fans, referees, or each other, kids will likely act the same way on the field.

    3     Some of them are very basic and easy to do, like shaking hands with other players before a game. Other examples may take a little more courage, such as acknowledging a great play made by the opposing team.

Learning good sportsmanship is important because it helps you develop an attitude of graciousness (礼貌) and respect that will carry over into all the other areas of your life.     4     Being a good sport in the classroom will eventually lead to being a good sport in the workplace.

So be a good sport in whatever you do!     5     When others see you acting in a way that makes it clear that winning isn’t the most important thing, you can move on to focusing on the important things, like having fum, getting exercise, and improving your skills!

A．Good sportsmanship can be shown in many ways.

B．However, bad sportsmanship is all about disrespect.

C．Players’ parents and coaches set examples that kids tend to follow.

D．We can be good sports by encouraging others but not laughing at them.

E．Starting as a good sport earlier will help you be a good sport as you get old.

F．If you’re a good sport on the field, you’ll also likely be a good sport in the classroom.

G．The example you set can be a powerful teaching tool for others.

7 . Chinese students always complain that they’re under great pressure and don’t get enough sleep. But they may be surprised to learn that they’re much luckier than their peers in South Korea and Japan, according to a recently published report, conducted by Shanghai Academy of Social Sciences on the physical and mental health of senior high school students in the three Asian countries.

According to the study among nearly 6,000 high school students in the three countries, Chinese students are the tallest but poorest in physical fitness. Chinese students are on average 168.17cm, compared with 167.61cm for South Korean students and 164.70cm for Japanese students. Chinese students asked for sick leave more than students in other countries. About 72 percent of Korean students never asked for sick and injury leave during high school, compared to 53 percent for Japanese students and 45 percent for Chinese students. Moreover, Chinese students drink alcohol and smoke earlier than Korean and Japanese students. Around 70 percent of Chinese students have drunk alcohol, compared to 50 percent for Korean and Japanese students.

According to the survey, Japanese and South Korean students suffer more pressure than their Chinese peers. Statistics show 16 percent of students in China said they experienced mental pressure often over the past year, while the numbers in Japan and South Korea were 33 percent and 47 percent respectively. Their worries come from “study”, “future after graduation”, “friendships” and “relationship with their parents”. To go with stress, 57.9 percent of Korean students sleep the least, less than six hours a day, compared with 46.6 percent of Japanese students and 30 percent of Chinese students.

More Chinese students were satisfied with their physical appearance, double that of students in the survey from Japan and South Korea. The report said that over half of students in South Korea had tried to lose weight in the past year, while in China the figure was only 22 percent. In measures of self-worth, such as “I think I am valuable” and “I think I am successful”, “I can complete many things”, “I won’t give up to failure,” Chinese students showed greater self-confidence than students in Japan and South Korea.

1. What’s the main idea of the second paragraph?

A．Chinese teenagers are tallest, but most unhealthy.

B．Chinese students drink most alcohol and smoke earliest.

C．Japanese students ask for least sick leave.

D．Chinese students ask for sick leave most often.

2. What can be inferred from the passage?

A．Chinese students are luckiest, yet most unsuccessful.

B．Chinese students are confident in themselves and luckier.

C．Japanese students are most stressed.

D．South Korean students sleep the least.

3. What does the underlined word “that” in the last paragraph refer to?

A．The height.

B．The percentage.

C．The weight.

D．The number.

4. The worries that cause students to be stressed come from the following factors EXCEPT ________.

A．study and career

B．physical appearance

C．friendships

D．family relationship

9 . Have you ever wondered if you see the same colours as other people? Most people know what blue is when they see it. They call it "blue” because they were taught the word and connected it with what they saw. But how do you know what you see as blue isn't someone else's red?

The ability to perceive （感知）different colours is up to receptors （接受器）in our eyes. Light waves hit these receptors and they react depending on which colour the light is, sending signals to the brain. The brain then reads these signals to determine which colour light the eyes are receiving.

Some people's receptors are more developed than others. The inability of the receptor to feel the light waves correctly means that some people cannot tell the differences between similar colours. Those with more developed receptors can see more colours. We sometimes hear people having an argument about whether something is dark blue or black. It might be because one person has stronger receptors to feel the light than another.

In the past, most scientists would argue that everyone saw colours in the same way. However, research was conducted on monkeys, in which their receptors were changed. This enabled them to see more colours than usual. Normally monkeys can only see blue and green, but the change allowed them to see red. Their brains automatically got used to new colours. This suggests that our brains may find new colors of the things we see. Colours could be a very personal experience , unique to everyone.

So, the next time you talk about your favourite colour, just remember if yours is blue and your friend says red, you two might actually be thinking about the same colour. What if everyone in the world has the same favourite colour, but just calls it different names?

1. What is Paragraph 2 mainly about?

A．How we perceive colours.

B．The inability to see colours.

C．What the brain does with signals.

D．The connection between receptors and light waves.

2. Which of the following might the author agree with?

A．Some people cannot feel colours with their developed receptors.

B．The more light people feel, the weaker receptors they have.

C．People with poor receptors usually have colour weakness.

D．People who have strong receptors can see dark blue.

3. What's the purpose of conducting the research on monkeys?

A．To test the monkeys with colours.

B．To develop the receptors of humans.

C．To enable monkeys to find more colors.

D．To prove everyone sees colours in a different way.

4. Where does the text probably come from?

A．A film review.	B．A science magazine.
C．An art journal.	D．A business newspaper.

10 . We believe that the more you get out into the world, the better place it'll be. But getting out into the world shouldn't mean leaving a footprint.    1     By following those, your destination will be better after you leave.

Don't hold back. The best way to know a new place is to talk to the local people. When you're staying with them, tell them about who you are, why you're there, what you want to see and what you love about bringing yourself to new place.    2    

Dive right in. What's the point in travelling outside of your home country if you don't also get out of your comfort zone?     3     If you want to sky dive and just have had that chance, do it. You'll go home with a story, and will leave locals with a story of their own of a brave traveler who conquered their fears.

Do your homework.     4     Try to learn more about local customs, traditions and manners so that you'll arrive well equipped to enjoy your time and communicate with locals without any bad impressions.

    5     We all travel for different reasons. Don’t forget what drove you to hit the road. Sometimes, the best memories happen when you least expect them. If you open yourself up to the world, you’ll never know how the world will change you!

A．Stay honest but get open

B．Travel when you’re eager to travel.

C．Don’t do anything that you might regret.

D．There’s no better way than bring a bit of yourself to it.

E．Here are several ways to make your mark while you’re travelling.

F．Sometimes it’s best to be armed with knowledge about your destination.

G．You shouldn’t take many factors into consideration when choosing your destination.