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malaria and dengue

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malaria and dengue

by GmatKiss » Sun Apr 29, 2012 10:58 am
Most efforts to combat such mosquito-borne diseases like malaria and dengue have focused either on the vaccination of humans or on exterminating mosquitoes with pesticides.

A.like malaria and dengue have focused either on the vaccination of humans or on exterminating
B.like malaria and dengue have focused either on vaccinating of humans or on the extermination of
C.as malaria and dengue have focused on either vaccinating humans or on exterminating
D.as malaria and dengue have focused on either vaccinating of humans or on extermination of
E.as malaria and dengue have focused on either vaccinating humans or exterminating
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by gmatblood » Sun Apr 29, 2012 11:25 am
GmatKiss wrote:Most efforts to combat such mosquito-borne diseases like malaria and dengue have focused either on the vaccination of humans or on exterminating mosquitoes with pesticides.

A.like malaria and dengue have focused either on the vaccination of humans or on exterminating
B.like malaria and dengue have focused either on vaccinating of humans or on the extermination of
C.as malaria and dengue have focused on either vaccinating humans or on exterminating
D.as malaria and dengue have focused on either vaccinating of humans or on extermination of
E.as malaria and dengue have focused on either vaccinating humans or exterminating
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by LalaB » Sun Apr 29, 2012 11:50 am
my answer is E

Most efforts to combat such mosquito-borne diseases as malaria and dengue have focused on either vaccinating humans or exterminating

"such as" is idiomatic.

"have focused" is a proper verb of the noun "efforts"

on either X or Y , not on either X or on Y. see the difference -"either on X, or on Y"
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by dhonu121 » Sun Apr 29, 2012 12:56 pm
E is the right answer.
Such as should be used instead of like.
Either X or Y.
X and Y should be parallel.
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