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. He struck several bad patches before he made good.

came across bad soil
Had many professional difficulties
Had a bad time
Went through many illness

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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
A vaccination is an example of the introduction of passive immunity into the body
The antibodies utilized in active immunity are acquired from another organism

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