Question

Do you know that humans have been cleaning their teeth for over 7，000 years? According to the BBC, the ancient Egyptians used a type of toothpaste (牙膏). ______ it is believed that the Egyptians used a finger ______ a toothbrush to clean their teeth. Chinese people may have ______ the first toothbrush around 1600 BC.

Your toothbrush, however, may have also become______. Because it is now possible to clean our teeth ______ using our hands!

Two Canadians, Adel Elseri and Said Fayad, have invented______called T2T or “tongue?to?teeth”. Elseri says he came up with the idea______he was driving home after a long day at work. His______ is a toothbrush that goes onto your tongue(舌). T2T has special edges(边缘) and toothpaste. So just______your tongue over your teeth and it cleans your teeth just like a toothbrush ______！ It will make your breath fresh too.

Elseri and Fayad made this hand?free toothbrush because they believed it was a(n) ______way for someone to brush their teeth. But people can only use the T2T______．

Would you use the tongue?to?teeth? The Huffington Post in the USA ______ readers what they thought. Sixty-?one percent said that they would use it while only thirty?nine percent said they ______. Personally I think I'm going to stick to(坚持用) the ______.

1.A. So B. Then C. But D. Or

2.A. instead of B. because of C. more than D. less than

3.A. discovered B. develop C. built D. developed

4.A. science B. history C. problem D. secret

5.A. by B. from C. without D. for

6.A. nothing B. everything C. anything D. something

7.A. until B. when C. since D. though

8.A. idea B. story C. word D. plan

9.A. hold B. pull C. move D. check

10.A. is B. does C. was D. did

11.A. shorter B. easier C. harder D. longer

12.A. again B. soon C. once D. already

13.A. told B. asked C. warned D. advised

14.A. shouldn't B. should C. wouldn't D. would

15.A. finger B. toothbrush C. mouth D. tongue

Answer 1