询问第一台计算机的发明时间,使用被动语态,故选 A (was; invented)。 2. 现在是九点,新闻已经结束了一段时间,使用现在完成时,故选 B (has been over)。 3. 询问结婚时间,使用动词“marry”,故选 D (marry)。 4. 狗的死亡让人难过,狗已经死了几天,使用现在完成时,故选 A (death; has been dead)...
【题目】FWhen technology was first invented, it was poor.The cars were 51 and couldn't go fast. Communica-tion was mainly by just walking to someone's house andso on. Technology has 52 a lot from that age. Nowpeople can communicate with mobile phones. Back then,you had to watch a ...
The first train was invented in 1804. Prior to the train, carts or trucks would be used on rails in mines and factories to move heavy materials. ...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your ...
Unit6 When was it invented?第四课时Section B (3a-self check)一、单项选择1.___ is allowed to get into this lab without Mr. Green’s permission.A.Somebody B.AnybodyC.Nobody D.Everybody2.In the past few years, great changes ___ in my hometown.A.take place B.took placeC.have taken...
In 1948,he asked the Drexel Institute of Technology 2 this problem. Bernard Silver,a graduate student,was interested. He and his friend Norman Joseph Woodland began to work 3 it. Soon,they invented 4 first working system. The system did work at first, 5 it was very expensive and sometimes...
When the first computer was invented in the 1940s, scientists ___ for a long time on this revolutionary technology. A. had been working B. were working C. have been working D. worked 相关知识点: 试题来源: 解析 A。本题考查过去完成进行时。在 20 世纪 40 年代第一台计算机被发明的时候,...
【题目】单句填空This isn't the first time technology(change) our manners. When the telephone was invented, people didn't know how to greet a caller. 相关知识点: 试题来源: 解析 【解析】 has changed 这不是技术第一次改变我们的礼节了。根据前面 的“this isn't the first time”可知,此处用...
Unit 6 When was it invented (时间:120分钟 分值:120分)第一部分 听力(共四大题,满分20分)Ⅰ.短对话理解(共5小题;每小题1分,满分5分)你将听到五段对话。每段对话后有一个小题,请在每小题所给的A、B、C三个选项中选出一个最佳选项。每段对话读两遍。( )1.What does the girl think is the mo...
Unit 6 When was it invented (时间:120分钟 分值:120分)一、听力理解(每小题1分,共20分)A)请听下面5段对话。每段对话后有一小题,从题中所给的A、B、C三个选项中选出最佳选项。听完每段对话后,你都将有10秒钟的时间回答有关小题和阅读下一小题。每段对话读两遍。( )1.When were the cars inven...
When it was invented In 1 . Who invented it Josephine Cochrane, a rich American who 2 lots of dinner parties. What it was used to do To wash a lot of plates(碗碟)and 3 safely. When it was introduced to the public In 1893. Who bought it at first The hotels and 4 restaurants. Whe...