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Scientists in Chile have made a new chemical that makes teeth 'cavity proof'. It could be in use within eighteen months. It could also mean visits to the dentist become a thing of the past. The scientists are calling the chemical 'Keep 32' – after the number of teeth we have in our mouth. In laboratory tests over seven years, 'Keep 32' wiped out all the bacteria that cause cavities in just 60 seconds. It also keeps working to fight the bacteria for several hours. In addition, it could also help fight gum disease.
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The team of scientists has already started trying to interest big American companies into using 'Keep 32'. "We are currently in talks with five [companies] interested in investing in our project or buy our patent," the researchers said. They say their product can be added to toothpaste, mouthwash or chewing gum and other dental care products, which would become 'bacteria busters'. The research team says 'Keep 32' could be added to food. It might even be possible one day to eat candy that does not cause tooth decay.
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Match the following phrases from the article.
Paragraph 1
1. |
Scientists |
a. |
disease |
2 |
a new chemical that makes teeth 'cavity |
b. |
fight the bacteria |
3. |
become a thing |
c. |
proof' |
4. |
the number of teeth we |
d. |
in Chile |
5. |
It also keeps working to |
e. |
have in our mouth |
6. |
help fight gum |
f. |
of the past |
Paragraph 2
1. |
trying to interest |
a. |
talks |
2 |
We are currently in |
b. |
added to food |
3. |
interested in investing |
c. |
decay |
4. |
other dental |
d. |
in our project |
5. |
'Keep 32' could be |
e. |
big American companies |
6. |
cause tooth |
f. |
care products |
Scientists in Chile (1) _________________________ chemical that makes teeth 'cavity proof'. It (2) ______________________ within eighteen months. It could also mean visits to the dentist become (3) _________________________. The scientists are calling the chemical 'Keep 32' – after the number of teeth we (4) _________________________. In laboratory tests over seven years, 'Keep 32' (5) _____________________ bacteria that cause cavities in just 60 seconds. It also keeps working to fight the bacteria for several hours. In addition, it could also (6) _________________________.
(7) _________________________ has already started trying to interest big American companies into using 'Keep 32'. "We are (8) _________________________ with five [companies] interested (9) _________________________ project or buy our patent," the researchers said. They say their product can be added to toothpaste, (10) _________________________ gum and other (11) _________________________, which would become 'bacteria busters'. The research team says 'Keep 32' could be added to food. It might even be possible one day to eat candy that does (12) _________________________.
Scientists in Chile have (1) ____ a new chemical that makes teeth 'cavity proof'. It could be in use (2) ____ eighteen months. It could also mean visits to the dentist become a thing of the (3) ____. The scientists are calling the chemical 'Keep 32' – after the number of teeth we have in our (4) ____. In laboratory tests over seven years, 'Keep 32' wiped out all the bacteria that (5) ____ cavities in just 60 seconds. It also keeps working to fight the bacteria for several hours. In (6) ____, it could also help fight gum disease.
The team of scientists has already started trying to (7) ____ big American companies into using 'Keep 32'. "We are currently (8) ____ talks with five [companies] interested in investing in our project or buy our (9) ____," the researchers said. They say their product can be (10) ____ to toothpaste, mouthwash or chewing gum and other dental (11) ____ products, which would become 'bacteria busters'. The research team says 'Keep 32' could be added to food. It might even be possible one (12) ____ to eat candy that does not cause tooth decay.
Put the correct words from this table into the article.
1. |
(a) |
made |
(b) |
making |
(c) |
makes |
2. |
(a) |
without |
(b) |
with |
(c) |
within |
3. |
(a) |
present perfect |
(b) |
past |
(c) |
now |
4. |
(a) |
mouth |
(b) |
gum |
(c) |
lips |
5. |
(a) |
effect |
(b) |
case |
(c) |
cause |
6. |
(a) |
addition |
(b) |
subtraction |
(c) |
multiply |
7. |
(a) |
interesting |
(b) |
interest |
(c) |
interested |
8. |
(a) |
in |
(b) |
on |
(c) |
as |
9. |
(a) |
patient |
(b) |
parents |
(c) |
patent |
10. |
(a) |
totaled |
(b) |
added |
(c) |
equaled |
11. |
(a) |
careful |
(b) |
care |
(c) |
caring |
12 |
(a) |
daily |
(b) |
days |
(c) |
day |
Spell the jumbled words (from the text) correctly.
Paragraph 1 |
|
1. |
makes teeth 'cavity ofpor' |
2. |
use twiihn eighteen months |
3. |
aroobalryt tests |
4. |
for leervsa hours |
5. |
In tidaniod… |
6. |
help fight gum asedesi |
Paragraph 2 |
|
7. |
trying to sneetrti big American companies |
8. |
We are uylcnrert in talks |
9. |
investing in our pcojret |
10. |
toothpaste, aotwhuhsm or chewing gum |
11. |
taednl care products |
12. |
tooth cyade |
Number these lines in the correct order.
( ) |
toothpaste, mouthwash or chewing gum and other dental care products, which would become 'bacteria |
( ) |
The team of scientists has already started trying to interest big American companies into |
( ) |
of the past. The scientists are calling the chemical 'Keep 32' – after the number of |
( ) |
teeth we have in our mouth. In laboratory tests over seven years, 'Keep 32' wiped |
( ) |
busters'. The research team says 'Keep 32' could be added to food. It might |
( ) |
proof'. It could be in use within eighteen months. It could also mean visits to the dentist become a thing |
( ) |
even be possible one day to eat candy that does not cause tooth decay. |
( ) |
using 'Keep 32'. "We are currently in talks with five [companies] interested in investing in |
( ) |
to fight the bacteria for several hours. In addition, it could also help fight gum disease. |
( 1 ) |
Scientists in Chile have made a new chemical that makes teeth 'cavity |
( ) |
out all the bacteria that cause cavities in just 60 seconds. It also keeps working |
( ) |
our project or buy our patent," the researchers said. They say their product can be added to |
With a partner, put the words back into the correct order.
1. |
'cavity chemical proof' that makes A teeth new. |
2. |
be months in use It within could eighteen. |
3. |
dentist become a thing of the past Visits to the. |
4. |
have mouth number we our The teeth in of. |
5. |
disease gum fight help also could It. |
6. |
scientists of team The started already has. |
7. |
to big companies Trying interest American. |
8. |
be can product Their toothpaste to added. |
9. |
care Chewing and dental products gum other |
10. |
cause not does that Candy decay tooth. |
STUDENT A's QUESTIONS (Do not show these to student B) |
|
1. |
________________________________________________________ |
2. |
________________________________________________________ |
3. |
________________________________________________________ |
4. |
________________________________________________________ |
5. |
________________________________________________________ |
6. |
________________________________________________________ |
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STUDENT B's QUESTIONS (Do not show these to student A) |
|
1. |
________________________________________________________ |
2. |
________________________________________________________ |
3. |
________________________________________________________ |
4. |
________________________________________________________ |
5. |
________________________________________________________ |
6. |
________________________________________________________ |
Write about teeth for 10 minutes. Show your partner your paper. Correct each other's work.
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1. VOCABULARY EXTENSION: Choose several of the words from the text. Use a dictionary or Google's search field (or another search engine) to build up more associations / collocations of each word.
2. TEETH: Search the Internet and find more information about tooth decay. Talk about what you discover with your partner(s) in the next lesson.
3. MAGAZINE ARTICLE: Write a magazine article about teeth. Include an imaginary interview with one of the Chilean scientists. Read what you wrote to your classmates in the next lesson. Give each other feedback on your articles.
4. WHAT HAPPENED NEXT? Write a newspaper article about the next stage in this news story. Read what you wrote to your classmates in the next lesson. Give each other feedback on your articles.
5. LETTER: Write a letter to a teeth expert. Ask him/her three questions about teeth. Give him/her three of your opinions on the best way to look after them. Read what you wrote to your classmates in the next lesson. Your partner will answer the questions you asked.
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