2020北京海淀初三(上)期中英语(11)

Researchers published the first study encouraging the use of medical masks in 1897, but they were uncommon at the turn of the century.

In 1905, Chicago physician Alice Hamilton published an article in the Journal of the American Medical Association. "A student in a large medical college in Chicago told me that when the doctor talked to others during an operation, he could see a spray of saliva（唾液）coming from the mouth of the doctor, "Alice Hamilton wrote," so masks should be worn by doctors and nurses in every operation. "

During the 1918 global flu, medical workers usually wore masks to protect themselves, and many cities required masks in public. In Seattle, streetcars required all riders to have masks.

In the 1920s, masks became standard in operating rooms. Over the next century, medical researchers went on with experiment on designs and materials of masks.

Post-World War II

Because of the heavy air pollution, Britons had to wear "smog masks". As developed countries cleaned up their pollution, smog and smog masks moved to developing countries. Mask models such as N95and KN90 became highly popular.

As we can see, masks have been helping mankind for centuries. Wearing medical masks is widely believed to be an easy but effective method to protect oneself from different kinds of harmful tings

54. Is the historical mask on show in a museum in Berlin?

55. What kind of masks did A. J. Jessup recommend?

56. When did masks become standard in operating rooms?

57. Why did Britons have to wear "smog masks"?

58. What is the passage mainly about?

书面表达（共10分）

九、文段表达（10分）

59. 从下面两个题目中任选——题, 根据中文和英文提示, 完成——篇不少于50词的文段写作。文中已给出内容不

计入总词数。所给提示词仅供选用。请不要写出你的校名和姓名。

题目①

假如你是李华, 今天因为某种原因不能上外教 Mr. Green的口语课。请你写——个请假条, 给出合理的请假理由, 并说明你将如何补上落下的内容。

提示词∶fall learning sheets（学习单）, learn…by myself

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