Question

 What invention could you not live without? A few years ago, a survey asked adults(成人) and teenagers to choose which of five things they "couldn't live without". The choices were the microwave oven(微波炉)， cell phone， personal computer, car,and toothbrush (牙刷).Believe it or not，the toothbrush got the first place. Nearly half the adults and one-third of the teenagers said they could not live without a toothbrush.

  I guess when you think about ways people cleaned their teeth before toothbrushes were invented, you might not want to live without your toothbrush，either. Would you want to chew (口且嚼)on a stick or bird feather(羽毛)？How about cleaning your teeth with a stick and salt?

  We can thank William Addis for the first mass-produced toothbrushes. Addis took a bone and made small holes in it. He tied some bristles(刷子毛)together and put them into the holes he had made in the bone. He began selling these around the year 1780 in England. Soon he became a rich man.

Over 150 years went by before American really picked up the brushing habit. In World War II，soldiers had been taught to brush their teeth every day. They brought the habit home with them. That's good news for our teeth！

根据短文内容，选择最佳答案。

(   ) 1. What's the invention you couldn't live without according to the passage?
A. Television. B. Cell phone.
C. Bike. D. Cup.

(   ) 2. Which of these didn't people use to clean their teeth before toothbrushes were invented? 

A. The bone. B. The stick. C. The salt. D. The feather.

(   ) 3. What does the underlined word "mass-produced" mean?

A.    Made a collection of many things.

B.    Made a large number of things.

C.    Made a new part for machines.

D.    Made a kind of something without any shape.

(   ) 4. What caused William Addis to become rich?

A.    Americans really picked up the brushing habit.

B.    Soldiers learned to brush their teeth every day.

C.    People said they could not live without a toothbrush.

D. He sold many toothbrushes.
(   ) 5. What did the passage tell us?

A.    Who invented toothbrushes.

B.    Who invented cell phones.

C.    When toothbrushes were invented.

D.    When cell phones were made.

Answer 1

1. B由第一段第三句可知,根据调查微波炉、手机、电脑、汽车和牙刷是人们认为在生活中不可缺少的五件物品。

2. A根据第二段最后两句可知，在牙刷被发明之前人们用树棍、盐或羽毛清洁牙齿。

3. B    由前半句"我们应该感谢William Addis"可推断mass-produced意为"批量生产"。

4. D    由上文内容可知，William Addis变得富有是因为他卖了大量的牙刷。

5. A    由第三段内容可知William Addis发明牙刷并批量生产，牙刷的发明时间、手机的发明者以及发明时间在本文中没有提到。