未知题型 Science and technology have ___ in important ways to the improvement of agricultural production.A) attached B) assisted C) contributed D) witnessed

未知题型 There has been a collision ___ a number of cars on the main road to town.A) composing B) consisting C) involving D)engaging

未知题型 He found the ___ media attention intolerable and decide t go abroad.A) sufficient B) constant C) steady D) plenty