在疫苗双盲法试验中,必须是
D
暂无解析
OneofthedisadvantagesintheGrammar-TranslationMethodisthatthetextsaretakenfrom_____,thelanguageofwhichdoesn'toftenmeetthepracticalneedsofthelearners.
Thefactory_______we’llvisitnextweekisnotfarfromhere.
InclassifyingtheEnglishconsonantsandvowels,thesamecriteriacanbeapplied.
Idon’tthinkthechargeforoverhaulingtheequipmentisexcessivein_______toitssize.
Weshallcertainlycontactyou,assoonasweare____apositiontoentertainnewbusinessinyourdistrict.