Boys and girls,

    Attention, please! Do you know how to keep safe in our everyday life? Today I'd like to tell you some ways to keep safe. {#blank#}1{#/blank#}

    {#blank#}2{#/blank#} A park is a safe place because there are no cars or buses in it.

    Second, obey the traffic rules, please! Before crossing a road, stop and look both ways—look left and right. You should walk on the right side of the road.{#blank#}3{#/blank#}

    Third, never put your head or hands out of a car, a bus or a train.

    {#blank#}4{#/blank#}

    Fourth, don't talk to strangers or go with them, especially for the children. {#blank#}5{#/blank#} That will be dangerous.

A. It is very hard to break a code without the code book.

B. Only people who know the keyword can read the message.

C. As long as there have been codes, people have tried to break them.

D. You can hide a message by having the first letters of each word spell it out.

E. With a code book, you might write down words that would stand for other words.

F. Another way to hide a message is to use symbols to stand for specific letters of the alphabet.

    Secret codes (密码)keep messages private. Banks, companies, and government agencies use secret codes in doing business, especially when information is sent by computer.

    People have used secret codes for thousands of years. {#blank#}1{#/blank#}Code breaking never lags(落后) far behind code making. The science of creating and reading coded messages is called cryptography.

    There are three main types of cryptography. {#blank#}2{#/blank#}For example, the first letters of "My elephant eats too many eels" Spell out the hidden message "Meet me."

    {#blank#}3{#/blank#}You might represent each letter with a number, for example, Let's number the letters of the alphabet, in order, from 1 to 26. If we substitute a number for each letter, the message "Meet me" would read "13, 5, 5, 20, 15, 5."

    A code uses symbols to replace words, phrases, or sentences. To read the message of a real code, you must have a code book. {#blank#}4{#/blank#} For example, "bridge" might stand for "meet" and "out" might stand for "me." The message "bridge out" would actually mean "Meet me." {#blank#}5{#/blank#} However, it is also hard to keep a code book secret for long. So codes must be changed frequently.

    Xie Wanying (October 5, 1900-Febrary 28.1999), better known by her pen name Bing Xin, was oneof the most well-known Chinese writers of the 20^th century. Many ofher works were written for young readers. Her pen nameBing Xin carries the meaning of a pure heart, and is taken from a line in aTang Dynasty poem by Wang Changling.

    Bing Xin was born in Fuzhou, Fujian, but moved toShanghai with her family when she was seven months old, and later moved yetagain to the coastal port city of Yantai, Shandong, when she was four.Such a move had akey influence on Bing Xin's personality and philosophy (哲学)of love and beauty, as the hugeness and beauty of the sea greatly opened youngBing Xin's mind and heart. It was also in Yantai, Bing Xin first began to readthe classics of Chinese literature, such asRomance of the Three KingdomsandWater Margin, when she was just seven.

    In 1913, Bing Xin moved to Beijing. She started herwriting career as she wrote for a school newspaper at Yanjing University whereshe was a student and published her first novel. Bing Xin graduated fromYanjing University in 1923 with a bachelor's degree, and went to the UnitedStates to study at Wellesley College, earning a master's degree at Wellesley inliterature in 1926. She then returned to Yanjing University to teach until1936.

    In 1929, she married Wu Wenzao, her good friend whenthey were studying in the United States. In literature, Bing Xin founded the"Bing Xin Style" as a new literary style. Shecontributed a lot to children's literature in China such asA Myriad ofStars (1923),Spring Water (1923),Six-one sister(1924),ToYoung Readers (1926),Homeward South (1931),The Collected Worksof Bing Xin(1932-1933). Bing Xin's literary career was productive. Shewrote a lot of works — prose, poetry, novels, reflections and so on. There is aBing Xin Literature Museum in Changle in Fujian Province. The Bing XinChildren's Literature Award is named in her honour.

At No. 150 High School of Changchun, Jilin Province, there are some talented students. They recreated the work A Thousand Miles of Rivers and Mountains that{#blank#}1{#/blank#}(paint) by Wang Ximeng during the Northern Song Dynasty.

Zhou Baile is among{#blank#}2{#/blank#}(they). He spent much time and energy on the work. Once there was yellow paint on his school uniform. His family suggested that he change into a new school uniform,{#blank#}3{#/blank#} he refused." For me, the paint is a symbol of creation," Zhou said.

" The painting is 11 metres long and it took the students 129 days{#blank#}4{#/blank#}(finish) it," said Duan Yingzi, the art teacher who guided the students.

{#blank#}5{#/blank#}2022, Duan started a painting club to teach students to enjoy and copy the works of many famous Chinese art masters. A Thousand Miles of Rivers and Mountains was one of the works. Later, Duan started{#blank#}6{#/blank#} painting project to copy the great work.

When they carried out the project, the students {#blank#}7{#/blank#}(careful) worked step by step, bringing the painting to life again on a big wall. They even added their own creative ideas.

" Seeing our work, I can sense how {#blank#}8{#/blank#}(excite) Wang Ximeng felt when he finished his great work," said one of the students." The process not only improves our {#blank#}9{#/blank#}(skill), but also helps us get relaxed," Zhou said.

Through the project, Duan {#blank#}10{#/blank#}(hope) the students can increase their understanding of Chinese painting and pass on the excellent traditional Chinese culture.