3 . Americans spend billions on vitamins, multivitamins for their health, but a review of numerous studies concluded there is little to no evidence that some of those vitamins prevent heart disease, cancer or death.

The report, released by the U.S. Preventive Services Task Force last week, concluded that “recent evidence is not enough” to determine whether vitamins actually help or hurt your health, based on 84 studies, 52 of which were done since 2014. Vitamins examined included vitamins A, B, C, D and E, as well as other multivitamins.

“Our suggestion is neither for nor against taking vitamins, or combinations of those nutrients (营养物质). We just don’t have enough evidence,” said Dr. John Wong, a doctor in the Department of Medicine at Tufts Medical Center who was involved in the report.

While the finding is that vitamins don’t have any benefits to “healthy, non-pregnant (未怀孕) adults”, it doesn’t apply to “children, people who are pregnant or may become pregnant, or people who are hospitalized.”

The Task Force admitted it makes sense that people would take vitamins in hopes of health benefits, as some shortage may lead to illness. But experts agreed the best way to get good health and prevent cancer is a balanced diet and regular physical activity.

“The suggestion across all organizations about vitamins is to eat a balanced diet, and then the key tends to be on plenty of fruit and vegetables and less junk foods,” Wong said.

Wong added people should refer to their health doctors to determine if any vitamins are worth taking. He said this suggestion should also serve as a need to further research into proving the official benefits and risks for each vitamin.

5 . Steph Clemence always intended to go to college. But life has a(an) _________ throughout her early childhood years to _________ barriers. Growing up, she led a nomadic (漫游的) life because her mother, who remarried several times, was always on the _________. By the time of high school, Steph had lived in 25 places.

When her stepfather died in a car accident, leaving her mother to support three daughters on a(an) _________ income, paying for college became a serious question. But she still tried to figure out what to do with a life so _________ her plan for schooling.

The _________ came one afternoon when she was cleaning her bedroom. She _________ a thick document where she found a handout titled “Mrs. Clark’s Book List” by her high school English teacher Dorothy Clark.

It wasn’t homework, but it could be a(an) _________ for those not able to receive higher education due to _________ problems like her. The teacher had spent months creating a list of 153 books whose contents would be as __________ as a two-year study at an arts college.

Steph studied the list. Each of those books __________ her to learn more. The reading list was also a(an) __________ in her everyday life, even __________ with her on vacations to find out the next book. She never did get to college, but has now only four books left before __________ the list. She wishes she could thank Mrs. Clark for how reading the __________ on the list has changed her life.

6 . In looking through your social media, there’s a good chance you’ve noticed pictures accompanied by texts. The pictures are likely made possible by a text-to-image program called DALL-E. For example, Twitter user posted a tweet with the text, “To be or not to be, rabbi holding avocado, marble sculpture.” Then a matching picture appears below.

The AI models come from Google’s Imagen software as well as OpenAI. a start-up backed by Microsoft. On its website, OpenAI calls DALL-E “a new Al system that can create realistic images and art from a description in natural language.” But most of what’s happening in this area is coming from a relatively small group of people sharing their pictures. That’s because Google and OpenAI have not made the technology broadly available to the public.

The text-to-picture services identify the most important parts of a user’s text and then guess the best way to picture those terms. There’s generally a text box, a button to start the generation process and an area below to display images. To indicate the source. Google and OpenAI add watermarks in the bottom right comer of images from DALL-E and Imagen.

Engineers trained the models on various collections of words and pictures from the web. OpenAI recognizes the potential for harm that could come from a model. To avoid the risk, employees removed violent content from training data, and there are filters（筛选）stopping DALL-E from producing images if users submit（提交）violent or illegal content.

Boris Dayma, a developer from Texas spelled out the problems in an explanation of their software. Despite the risks, Dhariwal, a research scientist at OpenAI, said it could open up creative opportunities for individuals and could help with commercial applications for dressing up websites. Results should continue to improve over time.

7 . Picture the scene: you’ve spent years working towards a very specific goal. You’ve put in countless hours of work and made many efforts along the way, but now that you’ve got there it doesn’t feel quite like you imagined. Instead of celebration, you feel emptiness, confusion and doubt.

Welcome to the anti-climax. The often-experienced but seldom-discussed downside of achieving life’s biggest milestones. Many of us work tirelessly towards our goals. We may spend our lives dreaming of the day we get married, publish our first hook or buy our first home. However, oftentimes, when we achieve these things it doesn’t feel quite as expected. In fact, the achievement of these goals feels a bit of a letdown.

So why do we often experience an anti-climax with big goals, even though we’re happy to achieve them? “An anti-climax can be an unexpected by-product of a milestone achievement. Usually, the more significant the milestone, the greater the anti-climax may be. The intensity（强度）of an anti-climax often relies on what we expect of this achievement.” says Rachel Vora. a psychotherapist（心理治疗师）.“The journey to achieving a milestone can he exciting and tiring in addition to giving us a sense of purpose and focus. Therefore, when this disappears overnight. we can often feel lost and confused, in spite of feeling proud of our achievement.

When this happens it can contribute to a mixture of emotions. We often falsely believe that we’ll feel completely different afterwards or that our feelings of low self-worth will disappear, but this is rarely the case. “Clients（客户）often present to me with an extremely great sense of ‘is this it?’ and ‘what now?’.” says Vora. “These feelings of confusion and disappointment, if let ignored, have the potential to cause clients to be in low spirits, or even worse.”

9 . Compean was no stranger to Los Angeles National Forest. He’d hiked the park several times. But after hiking along a _________ path last April, the 45-year-old man was lost.

As dusk _________, with several hours of aimless walking, his concern _________ fear. With only a bottle of water and less than ten percent battery _________ on his cell phone, Compean was unprepared for anything more than the two-hour journey he’d planned.

Compean climbed to a higher _________, some 7, 000 feet above sea level, where he found at least one bar of _________. “Help. My phone is going to die. I’m lost, ” he texted a friend, with a photo _________, showing where he was. All Compean could do then was wait. The temperature was dropping _________. Dressed so little, he soon felt cold to the bone.

Sixty miles away in Ventura County, Ben Kuo was reading a tweet _________ the Los Angeles County Police Department, showing an image of a man’s legs. Kuo has an unusual hobby. “I have always loved __________ where photos were taken,” he says. He frequently tries to __________ where movie scenes or television shows were filmed. When he saw the image of Compean’s legs surrounded by an endless landscape of __________, he immediately pulled up a satellite map on his laptop. The police department said Compean’s car was parked near Buckhorn Campground and Compean had been lost for a whole day, so he narrowed his search to the __________ area.

“There’s an amazing amount of information you can get from satellites, ”says Kuo. The first thing he __________ in Compean’s photo was the special grass. After comparing it to the satellite map, Kuo realized something, “He’s got to be on the south side __________ there’s not really any green valley on the north side.” That finding __________ his search, leading him to an area that was similar to a part in the image. The final step was comparing the __________ photo with 3D images of the area from Google Earth. The locations __________!

Thanks to Kuo’s __________ information, Compean was finally rescued and he was grateful to Kuo, “I __________ you my life”.

10 . Wu Ming, a young German born after 1995, is a big fan of Chinese culture. As he thought some diseases can’t be treated _______ with Western medicine, he decided to _______traditional Chinese medicine (TCM). In 2015, Wu came to Henan province, where a strong TCM culture can be _______. After a year of learning, he _______ the language barrier and started to learn Chinese medicine. Wu always _______ some Chinese herbal medicine by himself to know their flavours and effects, just like Shen Nong, a character in Chinese legend. In Wu’s opinion, TCM is one of the best-preserved _______ of Chinese culture.

Studying TCM also _______ Wu’s mind and lifestyle. He used to be _______ to electronic devices, playing video games every night. Instead of being trapped in the fast-paced but unhealthy daily _______, he now lives a(n) ________ and peaceful life, practicing good habits like drinking tea and reading.

Wu ________ what he has learned to help his family. He always provides his family members with some advice about staying fit after ________ their skin or tongues online. Over time, his family gradually began to understand his ________ for TCM.

Wu thinks there’s no big difference between China and Western countries. “________ comes from being out of touch”, said Wu. He plans to run a traditional Chinese clinic in Germany, which could serve as a(n) ________ between the two countries and publicize TCM and its culture.