Idiom
Select the correct statement about active and passive immunity.

Active and passive humoral immunity are both mechanisms of adaptive immunity that useantibodies
Immunological memory is established by passive immunization
The antibodies utilized in active immunity are acquired from another organism
A vaccination is an example of the introduction of passive immunity into the body

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Idiom
To take the wind out of another's sails

To manouevre to mislead another on the high seas
To anticipate another and to gain advantage over him
To cause harm to another
To defeat the motives of another

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Idiom
For each of the following sentences four alternatives are given. You are required to choose the correct meaning of the idiom or phrase given or underlined in the sentence. Dog in the manger

A dog that has no kennel of its own
An undersized bull almost the shape of a dog
A person who prevents others from enjoying something useless to himself
A person who puts himself in difficulties on account of other people

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