Unit 3 The world of science

Section Ⅰ Starting out & Understanding ideas

基础训练

根据首字母或汉语提示，用本部分所学单词的正确形式填空。  单词拼写

1.All of a sudden， a white light s towards my eyes， and I could see nothing.

2.In any unsafe situation， simply p the button and some highly-trained men will come to help you.

3.If you happen to be very f ， I can raise your leg high， possibly to my shoulder.

4.If you leave your headlights on you’ll soon run down the b . You’d better turn them off because the power’s going to be out all night.

5.She seems to have no d to go there. She prefers to stay at home.

6.Everyone believes that she’s perfectly （有能力的） of solving problems by herself.

7.New technology has enabled development of an online （虚拟的） library.

8.He joked they had to depend on a （指南针） and a lot of luck to get there.

9.It’s easy to （计算） your scores， just add your scores for each subject.

10.What impressive （物品）！ You must have put a lot of effort into it.

用方框中所给短语的适当形式填空。 选择填空

be capable of  have a strong desire in addition never say never in terms of

1. Both parents and teachers should let kids do tasks that they by themselves.

2. ， and always remember you still have the opportunity to win back.

3. The book is well organised plot. That’s why it is so popular.

4. ， Mr Luo served as a visiting professor at several universities.

5. As a scientist， he always says that he to improve people’s life in some way.

课文语法填空

As we all know， there are four great inventions in Ancient China： gunpowder， papermaking， 1 （print） and the compass. These things 2 （change） the world forever. In today’s world， we are 3 the great new age of technology， and most of the new great inventions are tech-based. For instance， advances in virtual reality and wearable tech， as well as the flexible battery， mean we should soon be seeing 4 （far） developments.

New inventions like 3D printers 5 （use） to make replacement hearts and bone parts. Reduced energy supplies and environmental 6 （pollute） have led to more advances in the technology for new vehicles.

Most inventions start with 7 （recognise） a problem that needs a solution. In terms of the environment， it is possible to create an intelligent walking house， 8 can be eco-friendly because of solar technology. Although there is 9 long way to go to invent a time machine at the moment， we should have a strong desire 10 （think） and create， and what remains important is that we never say never.

1.   2.   3.   4.   5.

6.   7.   8.   9.   10.

能力提升

阅读理解

I’m sure you’ve used the zipper many times. It can be seen almost everywhere today. But have you ever wondered who invented it？

Whitcomb Judson was an inventor. He had a friend who had a sore back. Judson’s friend couldn’t bend over to tie his shoes. In order to help his friend out， Judson designed what he called a “clasp locker” for him， basically a slide fastener that could be opened and closed with one hand. He patented （获专利） the idea in 1891. Even though he started his own company to make the clasp locker， Judson didn’t make his invention famous.

The zipper as we know today is a result of the work of a Swedish-American engineer called Gideon Sundback， who worked as head engineer at Judson’s company. Sundback improved on Judson’s design. His design was stronger， faster and more reliable than the former one， and Sundback patented it in 1917， calling it the “separable fastener”. With World War One fully underway， the army used his design on its clothing and equipment for the soldiers， although the invention still hadn’t become popular with the public.

However， that all changed in 1923 when the B. F. Goodrich Company decided to use Sundback’s invention on their new rubber boots. A leader at the company named them zippers after the noise they made， and the name became accepted. As the invention became popular， it caught the attention of fashion designers in France， who used zippers in men trousers.

The zipper not only makes it more convenient to fasten clothing， but plastic zippers are also wind-， dust- and water-proof， and they don’t stick or rust （生锈）. The invention of plastic zippers also meant they could be created in any color， making them another great tool in the fashion industry. Overall， it simply makes life easier for everyone， especially for those with disabilities.