人教版（2019）选择性必修三高中英语Unit 2 Healthy Lifestyle Period 2素养检测

Unhealthy diets are responsible for preventable deaths globally per year, more even than smoking tobacco, according to a major study.

"But the biggest problem is not the junk food we eat but the nutritious food we don't eat," say researchers, calling for a global shift in policy to promote vegetables, fruit, nuts and beans. While sugar and trans-fats are harmful, more deaths are caused by the absence of healthy foods in our diet. Heart attacks are the main diet-related causes of death, followed by cancers and diabetes (糖尿病) .

The study found that eating and drinking better could prevent one in five deaths around the world. "Rather than trying to persuade people to cut down on sugar, salt and fat, which has been the main focus of diet policy debate in the past two decades, it would be better to promote healthy options. Adoption of diets emphasizing beans and other healthy plant sources of protein, for instance, will have important benefits for human health," note the researchers.

The study is the most comprehensive analysis on the health effects of diet ever conducted. It looked at 15 different nutrients, giving detailed knowledge of the analysis and summary of the risk factors of them.

Tom Sanders, a professor of nutrition and dietetics (饮食学), said the analysis put too much emphasis on individual components rather than the overall diet. "Overweight is a major driver for risk of diabetes as well as cancer and the health evidence for this relationship is strong. Overweight is caused by eating more food energy than required rather than specific dietary components such as sugar. The trend for populations to sit too much is a major reason why there is an imbalance between energy intake and consumption but increased availability of foods with high calories makes it too easy to overeat."

I received a private message on Facebook. It began harmlessly enough: "Hey, girl. Wanted to invite you to join my next challenge group—we'll be focusing on fitting in 30 minutes of exercise and balanced nutrition."

It was all becoming too much. Facebook was running my life, not me.

But what killed Facebook for me was when I posted a photo, and five minutes later my son asked me how many "likes" it had got. His question was a wake-up call.

"Likes" are signs of acceptance and approval. I had forgotten that acceptance and approval need to come from within and had unknowingly set him a bad example.

Before Facebook, surfing the Internet was an occasional distraction and I spent a lot more time reading books and magazines. I checked in with friends through texts, emails and phone calls.

To recreate the simplicity of those days and set a healthier example to my son, I deactivated my Facebook account.

I'd been in the habit of checking Facebook many times a day, so I had to come up with some new habits. I carried a novel and a crossword puzzle book around with me. I rediscovered knitting. I started taking yoga classes.

I started to remember a few things. My body is fine just the way it is. I have friends who will help me out when I'm in trouble, and I will help them out. I do my best to be a good mother, and our son is happy and healthy. We are very lucky to be able to afford two vacations a year.

I stopped looking at the world through my cellphone. I felt completely present in the moment.

The break left me feeling better about myself, my family, my home and my life.

After a few weeks, I returned to Facebook. Now I look at the photos of my friends' kids growing up and treasure how social media allows me to keep in touch with family far and wide. I look in on a daily basis, but no longer with the desire constantly to post updates.

It is not an addiction any more.

As night approached, we sat around the campfire laughing and teasing one another. Suddenly there came a strange sound. We1 beyond the fire, into the darkness. My heart began to pound 2. Maybe the cougar (美洲狮) spotted a few days earlier had returned.

Silence took over as we were3 to see anything beyond the edge of firelight. There was a plopping sound, then a grey 4 moved across the gravel (碎石) , just beyond the lights.

What was it? We held our breath as the thing again dropped onto the gravel and moved quickly out of 5 .

"Maybe it's a flying squirrel." someone said.

There was another plop and6 near our car. Something seemed odd. What was it?

A friend7 his camera and waited for the creature to return. It landed again and just as quickly vanished. "It seemed to be 8 too fast," said our camera fan, "and I was unable to get a 9 of the strange animal."

He moved to the edge of the firelight, 10 himself for a better shot, and then began to laugh. There was a crunching of gravel and from 11 the car's darkened end emerged Rogers, who camped with us every summer. He carried a fishing rod. On the end of the fishing line was a grey sock, giving it a head and 12. We had all been 13 by a flying grey sock.

All the people burst into laughter. We sat long into the evening 14 past years and other funny stories. Yes, the camping 15 differed every summer but the friendship remained the same as a chosen summer family.

It's an acknowledged (true) that young people have their own cultures, lifestyles and attitudes. They are(constant) connected on social media, creating and sharing their own cultures. This is why Chinese director Zhu Lexian has tapped into youth trends, (bring) out a documentary series titled Generational Gravity.

The documentary has four key (subject) of interest to the global young generation—street culture, beauty and makeup, hairstyles and party culture. Zhu noticed that more and more young people, despite different (culture) backgrounds, welcomed and shared similar lifestyles.

Sun Yu, director of the documentary's first two episodes, also (grow) up listening to hip-hop music and developed thorough understanding of street culture. "You can see lots of young people in Los Angeles lean against the walls and snap (快拍) photos of their clothes to put on social media while waiting for hours outside the shops (buy) clothes. It's a scene could also be seen in Beijing. It's an inevitable (必然的) evolution of the world. "he said. Wherever they come , young people around the world share the desire to express themselves.