题目

下列各项中都属于生物的一组是A.含羞草、真菌、水      B.电脑、病毒、小草C.猫、蘑菇、松树        D.蝴蝶、小鸟、钟乳石  答案：C解析:略 — Look, that's Tom-the lost boy! — It's really     great comfort to see him safe again. He is sure to bring        comfort to his worried mother. [     ]A. a; a            B. the; the          C. a; /             D. the; /