作出正确判断，找出全部都是生物的一项（ ）
A．太阳、岩石、空气
B．煤炭、石油、天然气
C．金鱼藻、鲤鱼、河蚌
D．紫菜、牡蛎、鹅卵石
生物具有区别非生物的基本特征是：由细胞构成（除病毒以外）、生活需要营养、能进行呼吸、能排出身体内产生的废物、能对外界刺激作出反应、能生长和繁殖、都有遗传和变异的特性，等等．太阳、岩石、空气、煤炭、石油、天然气、鹅卵石，不具有生物的基本特征，不属于生物；金鱼藻、鲤鱼、河蚌、紫菜、牡蛎，具有生物的基本特征，属于生物．因此选项C符合题意．
故选：C．
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| Jack worked in an office in a small town. One day his boss __2__ him, "Jack, I want you to go to London, and to __2__ Mr Brown. Here's the address. His office is near the station." Jack went to London __3__ train. He left the station and thought, "The office isn't __4__ the station. I will find it __5__." But after an hour he was still looking for it, so he stopped and asked an old woman. She said, "Just go along this street, turn left __6__ the end, and it's the __7__ building on the right." Jack went and found it. __8__ days later, Jack went to the same city, __9__ again he didn't find the office, so he asked someone the way. It was __10__ old woman! She was very surprised and said, "Are you still looking for that place?" | ||||
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