Unit 6 When was it invented
Self Check
Ⅰ.词汇运用。
A)根据句意及汉语提示填写单词。
1．My mother doubted(怀疑) if he was a real policeman.
2．The lock(锁) is broken.You must buy one at once.
3．The website(网站) is useful.I found out some information that I need.
4．There are a lot of heroes(英雄) in the history of China.
5．Is Easter a national(国家的) holiday in China?
B)用括号内所给单词的适当形式填空。
6．The old man nearly(near) lost his life in that terrible ship accident.
7．How nice the cake smells(smell)! I can't wait to eat it.
8．Shen Nong discovered tea when boiling(boil) drinking water.
9．Mary was on the phone，all of a sudden(suddenly) two strangers broke into her house.
10．Some important information was mentioned(mention) in the reporter.
Ⅱ.按要求完成下列句子，每空一词。
11．I admired her when I heard she was a nurse.(改为同义句)
I looked up to her when I heard she was a nurse.
12．The first basketball game was played in__December，1891．(对画线部分提问)
When was the first basketball game played?
13．Not only Tom but also Kate has been to the school library.(改为同义句)
Both Tom and Kate have been to the school library.
14．We heard Sandy sing in the classroom.(改为被动语态)
Sandy was heard to sing in the classroom.
15．A knife is used to cut things.(改为同义句)
A knife is used for cutting things.
Ⅲ.语法填空。
阅读下面短文，在空白处填入一个适当的词，或填入括号中所给单词的正确形式(每空不多于3个单词)。
Most people think that only a genius(天才)can invent.That is not true.Many of the tools and products we use in our daily life were __16__(invent) by ordinary people by accident.
William Kamkwamba grew up on a farm in a small village in Malawi，Africa.When he was 14, he had to drop out of school __17__ his parents couldn't earn enough money to send him to school any more.
One day，when William felt the wind，he began to think __18__ it could be used. He __19__ a book from the library called Using Energy，which had __20__(picture) of windmills(风车) in it. Although the book didn't talk about using wind to produce __21__，it gave him this idea.
William started __22__(work) on a model of a windmill and he used it to power a radio! He then built a much __23__(large) windmill with old pieces of junk.The villagers were amazed when they saw he used it to power four light bulbs and to charge(使充电) their mobile phones!
William's windmill drew a lot of __24__ and he even wrote a book about his story.Now he travels around the world，speaking about his __25__ and developing other inventions to help people.
16．invented 17.because 18.how
19．borrowed20.pictures 21.electricity
22．working rger 24.attention
25．project
Ⅳ.阅读理解。
Nobody knows who invented the pencil or when it was invented.A Swiss(瑞士人) described a pencil in a book in 1565.He said it was a piece of wood with lead(铅) inside it.Pencils weren't popular，and people continued to write with pens.In 1795，someone started making pencils from graphite(石墨) and they became very popular.Today，people make pencils in the same way.They make the graphite into the shape of a stick，and then they put it inside a piece of wood.One pencil can make a line as long as 55 kilometers.
When people wrote with pens，they had to put the penpoint into ink(墨水) after every few ter someone invented a fountain pen(自
