Page 102 - 3 ADIM DENEME SINAVI YDT KİTAP 2.ADIM

YDT • İngilizce 2. ADIM • 4. DENEME

30. Which of the following is true about mosquitoes?
29. - 31. soruları aşağıdaki parçaya göre cevaplayınız.
A) They could not sense humans if they did not have
Some mosquitoes have a nearly foolproof thirst for human built-in workarounds that enable them to find us
blood. Previous attempts to prevent these insects from with ease.
locating humans by blocking a part of their sense of smell B) There are more odorants mosquitoes dislike than
have failed. A new study indicates that this is because they like, but scientists have uncovered three
these animals have built-in workarounds to ensure they enticing compounds.
can always detect us. Most animals with individual nerve C) It is challenging to develop mosquito repellents
cells in the olfactory system can sense only a single to mask the smell of sweat and body odour that
odour; however, researchers have discovered that the attract insects.
nerve cells of Aedes aegypti mosquitoes are capable of
D) The inability of their nerve cells to recognise a
detecting many odours. This means that even if a cell
particular human odour does not prevent them
loses the ability to recognise a specific human odour, it
from detecting other odours.
can still detect other scents. The study gives the most
E) The newly developed repellents have the capacity
comprehensive map to date of a mosquito’s olfactory
to easily confuse, irritate, or cause them to avoid
system and shows that masking human odours from
a specific area.
mosquitoes may be more challenging than previously
believed. Developing repellents that prevent mosquitoes
from sensing human-associated odours may be very
difficult. Perhaps it would be more effective to find
odorants that mosquitoes dislike than to attempt to
conceal ourselves from them. These repellents may
cause bloodsuckers to become confused or irritated,
causing them to flee.

29. It can be inferred from the passage that all 31. What is the passage mainly about?
mosquito species ----.
A) Different mosquito species and their habitats
A) lose their ability to recognise a particular human B) Repellents that most mosquitoes dislike
odour over time
C) The ways of hiding ourselves from mosquitoes
B) have unique nerve cells that help them sense
D) A recent study in individual nerve cells
only a single odour
E) Why it is difficult to keep mosquitoes away
C) do not show an almost unshakeable preference
for human blood
D) are not able to detect human odours because of
their nerve cells
E) are equipped with mechanisms that allow them to
spot only humans

12. SINIF 100 Diğer sayfaya geçiniz.