题目内容

Of the following four immunization routes, which one is the best route for protein antigens()

A. oral administration
B. intramuscular injection
C. intravenous injection
D. intradermal injection

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The substance that can activate a large number of T cells to produce immune responses at very low concentrations is called()

A. autoantigen
B. allergen
C. common antigen
D. superantigen

Bound morphemes include____()

A. bound roots
B. inflectional morphemes
C. affixes
D. free morphemes

In which period did Geoffrey Chaucer live()

A. Old English
B. Middle English
C. Early Modern English
D. Late Modern English

Morphemes can be classified as_____()

A. bound morphemes and free morphemes
B. inflectional morphemes and derivational morphemes
C. bound roots and affixes
D. prefixes and suffixes

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