1 . On a hot afternoon Rhiannon was driving her old van down the highway. As she ________ her window to let in some fresh air, her car registration paper blew off the sun visor (防晒板) and onto the floor inside. When leaning down to ________ it, she accidentally drifted into oncoming traffic. In panic, she over-corrected and pulled the ________ sharply in the other direction. ________, the van rolled over three times, and Rhiannon was thrown onto the road, lying in the middle of the road and bleeding, nearly ________.

A medical student witnessed the accident and came to her ________. He covered Rhiannon with his coat and gave her emergency first aid, including ________ the wound on her left arm before the ambulance arrived.

________, Rhiannon was rushed to a hospital where an emergency room doctor spent hours ________ all the pieces of windshield (挡风玻璃) from her arm, and gave her three dozen stitches (缝针).

Luckily, Rhiannon was saved. Not for the bandage, she would not have ________long enough for the emergency personnel to arrive. Though Rhiannon didn’t know him, she was grateful to the medical student who saved her life. So she ________ the words online, “It’s a pity that I don’t know your name. If you happen to see or hear this story and recognize yourself, thank you for your kind ________.”

Rhiannon also had a message for the other ________ heroes, “Please consider this a pay-it-forward letter of ________— a letter from the ________ you helped who, for whatever reason, couldn’t thank you themselves.”

4 . Figuring out biodiversity patterns and detecting rare or just-good-at-hiding species has long posed challenges for ecosystem monitoring and conservation efforts. Traditional survey methods are labor intensive and cover limited areas. Now, emerging environmental DNA (eDNA) techniques open new possibilities.

Scientists collect water or soil samples from an environment and extract (提取) any DNA traces left behind by organisms. This is the environmental DNA (eDNA). They then use one of the two analysis methods — quantitative PCR (qPCR) or DNA sequencing (DNA 测序). Similar to COVID tests, qPCR is used to detect if a specific species’ DNA is in the sample. For example, researchers tested river water eDNA to see if endangered fish X was present. When it was detected, they confirmed that the fish lived in that river without directly seeing it. DNA sequencing analyzes all DNA in the sample at once. Scientists can then match the DNA barcodes to databases to identify which species were in the sampled environment.

Although eDNA sampling cannot identify new species or those only known from photos and videos if they are not already listed in the reference databases, the real power of it lies in its ability to capture a wide range of organisms. With just one sample, scientists can detect all kinds of living things, from bacteria to whales, in almost any environment where life exists, including the deep sea and underground caves. One of the most significant advantages of eDNA sampling is that it allows scientists to detect species that are difficult to see or capture. This is particularly useful when studying rare or very small species, or when working in environments like dark water where visibility is limited.

This is just the start. Imagine a future where eDNA data could be collected from the most remote oceans by autonomous vehicles, analyzed by the drone or on board a research vessel (船舰), and integrated with other monitoring data so marine managers and the public can see near-real-time data about the condition of the ocean. Science fiction? Not any more.

5 . For the history of life on Earth, organisms have relied on the light of the sun, moon, and stars to find their way and schedule their lives. While the beginning of electric lighting in the late 19th century may have benefited humans, it has caused problems in the natural world. Among the impacts of artificial light at night(ALAN), light pollution lures migrating birds to cities with shocking consequences, contributes to the alarming decline in insect populations, and convinces sea turtle babies to amble(缓行)away from the water instead of towards it.

Now, a new study from the University of Plymouth adds another disappointing finding about how ALAN is affecting the creatures with whom we share the planet: Light pollution from coastal cities can trick corals(珊瑚)into reproducing outside of the optimum times when they would normally reproduce.

Using a combination of light pollution data and spawning(产卵)observations, researchers were able to show for the first time that corals exposed to ALAN are spawning one to three days earlier and closer to the full moon compared to those on unlit corals. “That shift may reduce the survival and fertilization success of gametes(配子)and genetic connectivity between nearby lit and unlit coral systems,” they explain.

“Corals are among the most biodiverse, economically important, and threatened ecosystems on the planet,” write the authors of the study.

“Climate change has led to mass bleaching(褪色)events. Habitat destruction, fisheries, and pollution have reduced corals substantially since the 1950s,” they write, adding, “The complete loss of corals is anticipated over the next 100 years.”

If we want to reduce the harm ALAN is causing, we could perhaps look to delay the switching-on of night-time lighting in coastal regions to ensure the natural dark period between sunset and moonrise when coral reproduction remains undisturbed.

7 . Dawn Loggins didn’t have a typical senior year. Back in 2012, Loggins was waking up early to get to school to put in a before-school _________ as a janitor (清洁工).

Before the rest of her peers _________ school, Loggins was cleaning bathrooms, scrubbing floors, and _________ down the very desks she would _________ later in the day as a student. After 7 hours at school, Loggins didn’t get to _________ home to enjoy an after-school snack or downtime either._________ , she clocked back in for another two-hour time on janitorial duty.

“I don’t mind cleaning,” Loggins said. “If you have to walk through trash to get to your desk, you’re not going to have an environment that _________ learning.”

While the teen was clearly hardworking, it wasn’t immediately obvious to school officials how badly Loggins _________ the financial support her job provided, until she asked her boss for _________ one day. The reason? Without electricity at home.

Even more shocking, while Loggins was at summer school, she __________ calling home, only to find out the phones had been __________ and her parents had moved away-without her. And she became __________ . When the school realized the extent of the neglect Loggins had been living with, they surrounded her with __________ . The community took her in, providing her with housing and food and clothing and helping her to apply for college.

And the efforts __________ : Loggins was accepted into Harvard University. Today she works as a motivational speaker, speaking to __________ that include education, homelessness, and women and youth empowerment.

8 . Nick Rose-Stamey is a lot like Jack Black’s character in School of Rock- a guitarist who discovers a passion for making music accessible to children. Working in the nonprofit arts education sector over the last 10 years raised his awareness of the lack of music programs in public schools, and later inspired his nonprofit, Band in a Bus. “The original idea was to take an old school bus and turn it into the best band class on wheels,” he says.

In fact, activities of Band in a Bus don’t actually happen on a bus. It provides instruments, courses, and staffing to students. Kids 18 and under can also participate in enriching summer programs through Band in a Bus, such as Bucket Brigade, five weekly classes where grades K-4 learn rhythm (节奏) and STEAM (science, technology, engineering, arts, mathematics) principles through contemporary music. There are also teen bands for grades 7-12 where kids learn to play pop music and develop social and team work skills.

When schools went virtual during the COVID-19 period, Rose-Stamey thought it was a shame that instruments were left sitting on shelves instead of in the hands of kids. So he created and distributed more than 1,000 “Band in a Box” DIY kits. Each kit contains small noise makers like kazoos, drumsticks, and shakers, with the intention of introducing a modernized music class experience that meets kids where they are.

“It is reported that if a kid has 30 minutes of a performing arts or creative elective every singleday, then that’ll help them develop their social, emotional and leadership skills, because there’s a lot of team work when it comes to making music. You have to learn how to work well with others,” Rose-Stamey says.

In the last year, Band in a Bus has worked directly with more than 500 students. “Music is a win-win for everybody,” Rose-Stamey says. “I just hope that someday we can stop making it the first kid out in the dodge ball (躲避球) game.”

10 . Bad judgments are meant to feed our own personal ego (自我意识) and put others down, which is not the healthiest thing to do. Here are five reasons why you should stop it now.

You start finding faults in everyone. Judging quickly moves on to more private areas of your life.     1     You fail to appreciate them and start getting dissatisfied with them. You become critical of even those who matter to you.

Judging becomes a habit. If you judge people, sooner or later, it becomes a habit, and you start judging everyone around you for the tiniest of things.     2     And you might dismiss even the best of people through these microscopic judgments.

People begin to distrust you. If you pass judgments about other people in front of your audience, you will lose their trust. As they will begin to feel that if you can judge others in front of them, you can talk about them behind their back.     3    

Judgment is a sign of unhappiness. If you are 100% happy with who you are, you are a lot less likely to feel the need to judge others. If you are self-assured, you will not feel the need to cast a downward glance at others.     4     Either way, it is a negative attitude.

    5     If you’re judging others, you’re probably judging yourself pretty harshly as well. You often tend to think that if you are judging people by what they wear, someone might in turn judge you, which, as a consequence, makes you extremely concerned with your appearance.