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A  if there is a positive correlation 
B  if there is a negative correlation 
C if there is little or no correlation 

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 IELTS
 JOURNAL 
 
178 
D if there is no information 
Write the appropriate letters A-D in boxes 30-35 on your answer sheet.
Example number of new malaria cases
number of malaria deaths Answer: 
A 
30. malaria growth rate
incidence of influenza 
31. chloroquine used in 1950s
number of new malaria cases 
32. amount of chloroquine taken per day effectiveness against disease 
33. resistance of parasite
number of new malaria cases 
34. growth of cities
number of new malaria cases 
35. use of soaked mosquito nets
number of new malaria cases 
Questions 36-38 
Choose ONE phrase A-H from the list below to complete each key point. Write the 
appropriate letters A-H in boxes 36-38 on your answer sheet. 
The information in the completed sentences should be an accurate summary of 
points made by the writer. 
NB There are more phrases A-H than sentences so you will not use them all. You may 
use any phrase more than once. 
36. Malaria infection ... 
37. Arthemeter ... 
38. Use of DDT ... 
A has spread to 40% of the population. 
B is preventable without the need for drugs. 
C has not been recorded in Northeast Asia. 
D is especially effective in aiding victims of Plasmodium falciparum. 

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 IELTS
 JOURNAL 
 
179 
E effectively rid parts of the world of malaria parasite.