1 . A new study has found that tools designed to warn drivers and automatically stop vehicles in emergency situations helped reduce crashes by about 50 percent.

For the study, numerous automobile manufacturers supplied vehicle equipment data on 93 different vehicle models from 2015 to 2020. This information was combined with data collected on more than 12 million police-reported crashes in 13 American states.

One of the technologies studied is called forward collision warning. Collison is another word for crash. This system uses cameras, radar and other technology tools to gather information on safe driving distances. It warns drivers if their vehicle is getting too close to other vehicles ahead. Another related driver assistance tool is known as automatic emergency braking (刹车). This system is designed to identify possible crash dangers involving vehicles ahead. The tool can automatically slow or stop a vehicle if it senses the immediate danger of a crash.

The group’s study found that front-to-rear (前后) crashes were reduced by 49 percent when the striking vehicle had both forward collision warning and automatic emergency braking. The systems also reduced crashes resulting in injuries by 53 percent. The research also suggested automatic braking systems perform well in many situations, including poor weather and low light conditions.

The study also found that vehicles equipped with technologies designed to keep vehicles in their driving lane (车道) “are effective in reducing single-vehicle crashes that lead to serious injuries”.

Many carmakers now include this kind of technology on some vehicle models. It is designed to automatically keep a vehicle centred in lanes of traffic. The study found these tools reduced crashes involving vehicles leaving the roadway by eight percent.

That study warned that drivers who put too much trust in driver-assist technologies are putting themselves at risk for serious accidents. A majority of drivers in the study said they were more likely to perform non-driving related activities, like eating or texting, while using the tools.

5 . You probably know who Marie Curie was, but you may not have heard of Rachel Carson. Of the outstanding ladies listed below, who do you think was the most important woman of the past 100 years?

Jane Addams (1860-1935)

Anyone who has ever been helped by a social worker has Jane Addams to thank. Addams helped the poor and worked for peace. She encouraged a sense of community (社区) by creating shelters and promoting education and services for people in need. In 1931, Addams became the first American woman to win the Nobel Peace Prize.

Rachel Carson (1907-1964)

If it weren’t for Rachel Carson, the environmental movement might not exist today. Her popular 1962 book Silent Spring raised awareness of the dangers of pollution and the harmful effects of chemicals on humans and on the world’s lakes and oceans.

Sandra Day O’Connor (1930-present)

When Sandra Day O’Connor finished third in her class at Stanford Law School, in 1952, she could not find work at a law firm because she was a woman. She became an Arizona state senator (参议员) and, in 1981, the first woman to join the Supreme Court of the United States. O’Connor gave the deciding vote in many important cases during her 25 years on the top court.

Rosa Parks (1913-2005)

On December 1, 1955, in Montgomery, Alabama, Rosa Parks would not give up her seat on a bus to a passenger. Her simple act landed Parks in prison. But it also set off the Montgomery bus boycott (抵制). It lasted for more than a year, and kicked off the civil rights movement. “The only tired I was, was tired of giving in,” said Parks.

6 . Over the last century, engineers all over the world have spared no effort to achieve the unachievable in bridge design.

Danyang-Kunshan Grand Bridge

No bridge is as long as the Danyang-Kunshan Grand Bridge in the world. The 164.8-kilometre-long bridge built in 2011 in China serves as part of the Beijing-Shanghai High-Speed Railway. The trip from Ningbo to Jiaxing that previously took 4.5 hours has been reduced to two, thanks to this bridge.

Rio-Niterói Bridge

Completed in 1974, the Rio-Niterói Bridge in Brazil is the second-longest bridge in all of Latin America connecting the cities of Rio and Niterói across the Guanabara Bay. The Rio-Niterói Bridge is technically known as a “box-girder (箱形梁)” bridge, made of special concrete. It receives an astonishing 140,000 (or more) vehicles per day.

Hartland Covered Bridge

The Hartland Covered Bridge is the world’s longest covered bridge. The 1,282-foot-long bridge was opened in 1901 and has been on Canada’s list of National Historic Sites since 1980. Although it was originally built without a roof, the bridge was capped with wooden materials during the repairs in 1921.

Jiaozhou Bay Bridge

The newly-built Jiaozhou Bay Bridge in China was named “world’s longest bridge over water” by Guinness Book of World Records in 2011, a title previously held by the Lake Pontchartrain Causeway. The dispute was settled when the title of “longest continuous bridge over water” was given to the causeway, with the Jiaozhou Bay Bridge receiving the title of “longest bridge over water”.

7 . As you walk around the UK in March, you might notice that some people are wearing a daffodil (水仙花) on their coats. The British wear these yellow flowers to show they support one of this country’s best-known charities: Marie Curie.

Marie Curie tries to ensure everyone who has cancer is cared for in the best possible way. It also helps fun d research into possible cures. Founded in 1948, it has been continuing with its goal ever since.

The charity was named after Marie Curie, a famous scientist. She experimented with newly-discovered elements to create the theory of radioactivity (放射性). Unfortunately, over-exposure to the radioactive elements made her develop a disease and die in 1934. Marie Curie won the Nobel Prize in two different fields. Because of her pioneering work, the charity decided on the name of Marie Curie.

The daffodil is one of the first plants to flower during spring in the UK, which marks the return of flowering plants to the ecosystem after winter. Because of this, the charity uses the daffodil as a symbol, hoping cancer patients could recover from sickness.

Everyone you see wearing a daffodil has contributed to the charity, but each daffodil is worth only what you want to pay for it. The charity does ask that you stick to a minimum amount of £1.

The charity encourages people to start wearing their daffodils at the start of March, when the “Great Daffodil Appeal” kicks off. But that doesn’t mean you can only wear them in March. People are sometimes seen walking around with daffodils on their clothes all year round.

9 . Dance Classes

Ballet

Ballet teaches grace, posture (姿势) and flexibility. Students focus on the use of proper ballet items (物品), expanding their knowledge of classical ballet techniques and improving motor skills for classical ballet practice. The class is a formal ballet class.

Age: 8 — 10

Date: September 7, 2019 — May 16, 2020

Time: 10:30 am — 12:00 am on Saturdays

Creative Movers

Students can explore creative movement, balance, focus, the development of skills, motor planning and balance. The class helps build strength, flexibility and self-confidence, and allows children to realize expression in a positive and encouraging environment. Children use their imagination to celebrate movement and have lots of fun.

Age: 3 — 5

Date: September 7, 2019 — January 18, 2020

Time: 9:00 am — 9:45 am on Saturdays

Jazz

Jazz includes movements from both classical ballet and dance techniques. This class will focus on traditional Jazz dance. Students will be introduced to jazz-style rhythms and movements. In order to ensure proper placement for your child, we invite all students to participate in a sample (示例) class. Students and parents work with program staff to meet students’ personal dance goals.

Age: 5 — 6

Date: September 7, 2019 — May 16, 2020

Time: 2:00 pm — 3:00 pm on Saturdays

Hip Hop

Students will be introduced to several different aspects of hip hop dance including Popping, Locking, Breaking and Tutting in a high-energy environment. Our hip hop instructors are highly knowledgeable and will provide students with a wonderful view of hip hop dance.

Age: 7 — 10

Date: September 7, 2019 — May 16, 2020

Time: 1:00 pm — 2:00 pm on Sundays

10 . I was 6 years old when my father told me we were leaving the Big Apple Circus (马戏团). Until that point, I had spent most of my life on the circus lot, playing with the other circus kids. The circus, by its nature, is one that has a loose structure. So the early years after my leaving the circus to sit in a classroom all day felt more like a prison.

But years later, I found areas that interested me. I took the skills I had learned from being onstage and applied them to broadcasting. And so when Boston’s news station WBUR offered me a job out of college, I jumped at the chance. Along the way, I found I really enjoyed the work. I became WBUR’s news reporter. The flexibility and adaptability I’d learned in the circus as a child helped me do my job naturally and easily in a stressful situation — whether it was a destructive tornado outside Boston, or the Boston Marathon bombings of 2013.

But then a serious infectious disease appeared. Suddenly, for the first time in my adult life, I went for a year without doing any shows. But it became clear to me that performing was what I truly wanted. For me, the circus symbolizes who I am. And stages have always been where I’ve felt the most free. Some people get nervous before they go onstage, but by assuming (扮演) the character of Jacques ze Whipper and drawing a stupid moustache on my face, all my social anxiety disappears.

Circus performances go beyond age, socioeconomic status (地位), and even language. It’s the type of performance where you can go anywhere in the world to entertain anyone — help anyone forget their troubles for 5, 10, and even 30 minutes. And most importantly, for me, it means coming home.