首页
登录
职称英语
[img]2022m1s/ct_ve01004001z2021j_eyyjsad_0192_220106[/img] [br] [originaltext]
[img]2022m1s/ct_ve01004001z2021j_eyyjsad_0192_220106[/img] [br] [originaltext]
游客
2023-10-12
117
管理
问题
[br]
The scalpel is one of the oldest inventions in medicine. It is a small, light and very sharp knife. People used it for the first time around 3000 BC in the area of modern Iraq. The scalpel did not change very much for 4,000 years.
The Chinese invented acupuncture needles around 2000 BC. At first, they did not make needles from metal, but from stone. Today, people in China and other countries use acupuncture for many illnesses.
People in southern Italy invented the first false teeth in about 700 BC. They used pieces of bone, or sometimes second-hand human teeth! After that, false teeth did not change for the next 2,500 years until, in 1770, a Frenchman called Alexis Duchateau first used porcelain—a hard, white material that we still sometimes use today.
Zacharias Jansen from Holland made the first microscope in about 1590. Through it, objects appeared nine times bigger than their real size, but it did not give a very clear picture. Jansen did not use his invention very much because people at that time did not want to look at small things!
选项
答案
false teeth
解析
根据原文可知,大约在公元前700年,意大利南部的人们发明了第一颗假牙。因此,填入false teeth。
转载请注明原文地址:https://tihaiku.com/zcyy/3091355.html
相关试题推荐
What’sbeingdiscussedinthetalk?[br][originaltext]F:Well,I’msureallo
What’sbeingdiscussedinthetalk?[br][originaltext]F:Well,I’msureallo
What’sbeingdiscussedinthetalk?[originaltext]F:Well,I’msureallourlis
WhyhasMarybeenabsentfromclass?[br][originaltext]W:Annemissedclassag
WhichofthefollowingisNOTtrue?[br][originaltext]Theweatherwascloudyt
WhichofthefollowingisNOTtrue?[br][originaltext]Theweatherwascloudyt
WhichofthefollowingisNOTtrue?[br][originaltext]Theweatherwascloudyt
Whichofthefollowingdidthecallerhavedecorated?[br][originaltext]M:Hel
Whichofthefollowingdidthecallerhavedecorated?[br][originaltext]M:Hel
Whichofthefollowingdidthecallerhavedecorated?[originaltext]M:Hello,th
随机试题
Thecustomerdidnot______anydifferencesbetweenthetwins.A、contactB、notify
It’snecessarythattheproblem______insomewayorother.A、issettledB、wass
[originaltext]M:Doyouthinkyoungpeoplearegiventoomuchfreedomnowadays,
进修生必须从事本专业工作____年,具有一定理论水平和实践经验的______。(
跳远落地缓冲阶段,人体股四头肌完成()。A.退让工作 B.克制工作 C.等
我们党和国家历来重视人民民主专政国家政权的建设,运用人民民主专政的力量。巩固人民
如下图所示,欲求出各位同学三科的平均分,则在E2处可以先填写公式(),再通过
()提出了结构式家庭治疗模式。A.罗杰斯 B.林德曼 C.班杜拉 D.
培训管理体系包括( )等。A.企业培训制度、培训政策、管理人员培训职责管理
以下何表现不见于Graves病 A.弥漫性甲状腺肿 B.突眼 C.胫骨前黏
最新回复
(
0
)