Do you know anything about the invention of the bar code(条形码)?
A small food store owner found it was difficult to keep records of the product information. In 1948; he contacted the Drexel Institute of Technology to solve this problem. Bernard Silver was interested in it and he set out to look into it. Silver and his students realized their answer in the form of ultraviolet light(紫外线)，ink and a scanner(扫描仪).
The system did work at first, but it's very expensive and sometimes the system didn't work well. If the invention was to become popular in grocery stores, the problems had to be solved. Finally, Silver solved them.
The patent (专利权) for the bar code system was asked by Silver and Woodland in 1949. But the patent was not given until 1952. Although this patent was given, the system was still not popular among store owners. In 1966, the system began moving its way into more grocery stores. Logicorn developed the Universal Grocery Products Identification Number (普遍标识号) in 1970. Marsh's superstore in Troy was the first store to set up this bar code reading system. It became very popular ever since, and now it's obviously popular in all types of stores worldwide.
①讲座目的：使学生了解濒危动物以及保护措施
②时间：本周五上午9:30-11:00;
③地点：学校礼堂;
④注意事项:……（至少两条）。
要求：
①要点齐全，语句通顺，语法正确，书写规范，可适当发挥;
②词数：80词左右（开头和结尾已给出，不计入总词数）。
参考词汇：endangered濒危的，hall礼堂
Hello, everyone! May I have your attention, please?
That's all. Thank you.
Mrs. Black was worried because she couldn't stop her son, Jack, from betting (打赌). Jack spent all his money betting on horse races. And even worse he would bet on everything. So Mrs. Black asked her family doctor, Mr. Dodd, for help. The doctor was an old funny man with a beard (胡须). He said, “I've stopped many people from betting before. I can help your son, too.”
The next day Mrs. Black took Jack to see the doctor. While they were talking, Jack was looking at the doctor's beard. Suddenly he said, “I bet you $50 that your beard is not a real one.” “Oh, no,” the doctor said. “Can I pull your beard and find out?” the boy asked. “OK, if my beard is real, you will pay me $50.” Then the boy pulled it and soon found out it was real. The doctor laughed.
Two days later, the doctor telephoned Mrs. Black, “I think I've stopped your son from betting.” He told her the story. But Mrs. Black said, “You've made him worse.” “Why?” the doctor asked. “Because before he went to see you, he bet me $100 that you would ask him to pull your beard!”
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proud against send perhaps way |
Dear students,
There are many sayings about friends, such as" Friends are like books—you don't need a lot of them as long as they are good" and "A true friend reaches for your hand and touches your heart. "When you read these sayings，which one can make you think of your best friend? Please write a passage about him(her). You can send the passage to school newspaper@xsschool.com.
要求：1）词数80词左右；
2）以你选择的谚语为主题句结合具体的例子来阐述；
3）文章不得出现你所在的学校及你的真实信息；
4）开头已给，不计入词数。
Dear editor,
I like the saying …
to Mars?
Sun Wukong can himself different animals.
