He insured his car ________ he had an accident.
D
他给自己的汽车投了保,以防万一遇到交通事故。考查连词词义区分题。A否则,要不然B如果C自从,由于D以防万一,以免
Towriteuphisnovel,Johnislookingforanenvironmentfree________outsidedistraction.
Moderneconomics________thecountry’sagriculturalpolicies.
______ofmeaningisaprocessbywhichawordthatoriginallyhadaspecializedmeaninghasnowbecomegeneralized.
Fromtheviewpointofwordformation,theword“smog”isa______.