题目

下列各项属于生物的是（ ） A．地里钻出的竹笋   B．恐龙化石 C．不断长大的钟乳石 D．珊瑚礁 答案：A---Why isn't he in the hospital with his injured mother?---No one ______ him of the accident. A．informed B．informs C．had informedD．has informed