单选题 The fighter plane fell into a mountain after take-off, its bombs exploding as it hit the ground.
【正确答案】 D
【答案解析】[解析] 本题考查的是近义动词辨析。A选项smash意为“撞击,打碎”,例如:Firemen have to smash the window and get in.消防员不得不打碎窗户后进去。B选项cast意为“掷,扔,撒,抛”,意思完全不符合。C选项plunge意为“投入,跳进,陷入”,例如:He stripped off and plunged into the sea.他脱光衣服然后跳进海里。D选项crash意为“碰撞,坠毁”,常与飞机、汽车搭配,因此本选项符合题意。