英语翻译：thescienceofbioticcontrol
Ifyouaretoo________ofyourchildren,theywillneverlearntodealwithdifficultiesinlife.
A、respective
B、detective
C、protective
D、effective
WhichofthefollowingisNOToneoftheextra-linguisticfactorsthatcausechangesinmeaning?
A、Culturalreason
B、Historicalreason
C、Classreason
D、Psychologicalreason
ThelargestandsmalleststatesoftheUnitedStatesare________.
A、AlaskaandRhodeIsland
B、TexasandMaine
C、TexasandRhodeIsland
D、AlaskaandMaine
Heinsuredhiscar________hehadanaccident.
A、unless
B、if
C、since
D、incase