What time of day can you think most quickly? Are you a morning person?" Or does it take you a few hours to get your brain going? A lot of recent research suggests that we should pay attention to our body clock. It can tell us what time of day we can perform best at.

    Many people work best later in the morning. This is because the body's temperature takes time to rise through the day. Taking a warm shower when you wake up can help your body's temperature rise quickly.

    But everyone's body clock is different and some are special. Morning people will get up early and work better early in the day." Evening people will work later, but work better towards the end of the day.

    Research shows that we're better at some activities at certain times of the day." Physical performance is at its best between 3p. m. and 6p.- m.-,- so it's better to exercise later in the day.

    Between noon and'4p. m. , people begin to pay less attention. This is because we think less quickly after, a big meal. Research also shows we become sleepy around 2 p.m. This is why people in Spain take a short sleep in early afternoon.

    Finally'it is best to eat when we' re active. This allows our body to burn calories (卡路里) better and stops our blood sugar levels from getting too high.

    Do you know what makes lightning (闪电)? {#blank#}1{#/blank#}

    Lightning strikes happen when ice and water in clouds rub (摩擦) together, and cause atmospheric (大气层的) changes. When this happens, it creates a static charge (静电). Lightning can strike inside the cloud, between two clouds or between a cloud and the earth. {#blank#}2{#/blank#}

    Lightning can be very dangerous. Every year, lightning kills people because it can start big fires or because it reaches a temperature of 28,000℃. About 1,000 people are hit by lightning every year in the United States, and about 100 of them die as a result.

    {#blank#}3{#/blank#}Scientists think that there are more than three million lightning strikes every day in the world. An American man, Roy Sullivan, who worked in a park, survived from the most lightning strikes. {#blank#}4{#/blank#}And he keeps the highest world record.

    Lightning is sure not something to play with. When lightning strikes, it's best to stay inside a large building. {#blank#}5{#/blank#}Also, do not lie down on the ground, or the electricity may go through you and cause a heart problem.

    English playwright Arthur Wing Pinero said, "Where there's tea, there's hope." Similarly, a Chinese saying goes that "Firewood, rice, cooking oil, salt, sauce, vinegar and tea are the seven necessities to begin a day."

    Tea is, without doubt, welcomed all over the world. According to Statista, a German website for statistics (数据), global tea production reached about 5.8 million tons in 2018. It has become the most consumed beverage (饮品) in the world – after water, of course.

    According to the UN, tea is much more than just a hot drink. It's a big part of many cultures around the world. You probably know that people in China use top-grade tea to show respect when receiving important guests. Meanwhile, the British tradition of afternoon tea is an important part of that country's identity. Making Malaysia's pulled tea has become a sort of art form, where drinkers take pride in its entertainment aspects.

    Apart from its cultural significance (意义), tea is also a medicine, used from ancient times to modern day. "Tea is cold and lowers the fire," Chinese Ming Dynasty herbalist Li Shizhen once said. The health benefits of tea are still being discovered today: preventing heart disease, obesity and cancer have all been linked to drinking green tea, according to the National Center for Biotechnology Information in the US.

    Hot or cold, bagged or loose-leaf, tea is more than a drink – it's a social custom and also a magic medicine, a link to the past and a way of life.

Has your mother or grandmother ever made embroidered (刺绣的)clothes for you? In the past, Chinese people often embroidered on hats, shoes and dresses. Some girls would even embroider on a sachet (香囊)as a gift for their lovers.

Shu embroidery comes from Sichuan. It is said that Shu embroidery is the old lest kind of embroidery in China. People began to make it during the Han Dynasty (206BC-220AD).They sold it to other countries such as ancient Rome.

Shu embroidery takes time. It might take as long as a whole day to finish just 10 cm. Embroidery workers need to divide each silk thread (丝线) into more than 10 or over 30 smaller threads. Each smaller thread is thinner than a human hair.

Meng Dezhi, who used to work at the Chengdu Shu Embroidery Factory，has been making Shu embroidery for over 40 years. She loves this form of art and wants more people to try it, so she gives lessons in universities. She said. "Although the work is hard, Shu embroidery stands for thousands of years of Sichuan culture. It is a symbol of Chinese culture as well."

Over the past 6 years, Zhang Chaofan has given away 1.35 million yuan and raised 5.2 million yuan from the public to help more than 400 people with health problems—including teachers with cancer (癌症) and disabled children in poor families—learn traditional Chinese culture.

Zhang, 29, was born without a left arm in Changchun, Jilin, but her hard work to become stronger has encouraged many people. She was chosen along with 67 other honorees (领奖人) to receive the Eighth National Ethical Role Model award (第八届全国道德模范提名奖) at the Great Hall of the People in Beijing on November 5th, 2021.

In 2015, Zhang set up a handwriting and painting school in Changchun. When she found that some parents were unable to pay for their children's education, she made the lessons free and began providing 300, 000yuan every year to help them.

In early 2020, her school was made to suspend all courses because of COVID-19 (新冠肺炎) but it didn't stop her from helping the poor families. She raised more than 8.9 millionyuan and gave them away to Hubei hospitals.

"Women in the new times should have the courage to create value and also have a sense of social duty," she said. "It is my great honor to be chosen as a model. This will become a driving force for me to move ahead and keep helping the poor and the disabled."

On a hot day，Dog finds a tent on the beach."Cool! "he says."Now I can stay away from （躲避） the hot sun."And he walks inside. 

"Hey，Mouse!Come and see the tent I find，"says Dog. 

"Thank you!It is a great place to stay away from the hot sun，"says Mouse，and he walks into the tent. 

"Hey，Cat!"call Dog and Mouse."Come and see our tent.It is a nice place.""Thanks，"says Cat when he walks inside. 

"Hey，Chicken!"they call."Come into our tent and cool off! ""Thank you，"says Chicken.and he walks inside. 

"Hello，Elephant!"say Dog，Mouse，Cat and Chicken."We would like to ask you to come into our tent，but there is no more room.We are very sorry." 

"I am sorry for you，"says Elephant."You see，this is not a tent.It is my hat.""Oh，"says Dog."We will look for a tent somewhere else.""That's OK，friends， "says Elephant."We can share （分享）it! "