单选题 It's difficult to believe that this little brown thing will eventually turn ______ a beautiful butterfly.

【正确答案】 D
【答案解析】turn out关掉,成为,证明是,生产出;turn around使转身,使好转,改变意见;turn to求助于,求教于,查阅;turn into进入,变成。此句意为“蛹变成蝴蝶”。