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
70
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
You______homeifyouarenotwillingtogooutwithus.A、hadbettertostayB、
PassageSix[br]What’sthemajorproblemtheauthorisfacing?It’shardforhim
对某特大桥(五跨连续梁桥)进行控制检测,由于该桥在竣工时未按规定设置永久观测点,
依据健康的定义可将其分为身体健康、()和社会适应健康。A.环境健康 B.心理
公开发行公司债券,应当符合()的规定。 ①《证券法》②《公司法》 ③
把下面的六个图形分为两类,使每一类图形都有各自的共同特征或规律,分类正确的一项是
图示容器,面积A1=1cm2,A2=100cm2,容器中水对底面积A2上的作用力
()自股份发行结束之日起12个月内不得转让。A:特定对象以资产认购而取得的上市公
医疗用X射线电子计算机断层扫描检查装置
银行承兑汇票的承兑银行,应当按照票面金额向出票人收取()的手续费。A:千分之一
最新回复
(
0
)