A. pertaining to

B. nourishment of

C. inspection of

D. softening of[填空题]Change the following word into its plural form: Appendix----{appendices}.[填空题]Change the following word into its plural form: Bacterium---{bacteria}.[填空题]Change the following word into its plural form: Spermatozoon---{spermatozoa}.[填空题]Change the following word into its plural form: Vertebra---{vertebrae}.[填空题]Change the following word into its plural form: Diagnosis—{diagnoses}.[单选题]