C

    It is a true story. Once upon a time, one of Alex's horses was stolen by his neighbor. Alex went to the neighbor's home with a policeman to get his horse back. But the neighbor refused to give the horse back. He said that it was his horse.

    Suddenly Alex had a good idea. He put both of his hands over the eyes of the horse and said to the neighbor, “If this is your horse, then you must tell us in which eye the horse is blind.”

    “In the left,” said the neighbor. Alex took his hand from the left eye of the horse and showed the policeman that the horse was not blind in the left eye.

    “Oh, I have made a mistake,” said the neighbor. “He is blind in the right eye.” Alex then showed that the horse was not blind in the right eye, either.

“I have made another mistake,” said the neighbor.

    “Yes,” said the policeman, “and you have also proved that the horse isn't yours. You must give it back to Mr. Alex. ”

我们通常吃的鸡蛋，并不是生物学意义上的鸡的卵细胞，实际上鸡的卵细胞应包括（　　）

阅读下列短文，回答问题：

汽车作为曾经推动人类文明向前跃进的现代社会的产物，在给人类的生活带来便捷舒适的同时，对自然生态环境的恶化也有难以推卸的责任．大气污染主要来源于工业污染和汽车尾气，99%的一氧化碳和一氧化氮的排放来源于汽车尾气．我市近几年来汽车保有量的增长很快，环保面临如汽车污染等问题的考验．

另据报道：将氢气应用于汽车发动机的技术已在我国研制成功；酒精为燃料的汽车已在北京市、河南省使用；很多地方已将一部分汽车改用液化气作燃料．

（1）请提出我市治理汽车污染的一条合理化建议：____ 

（2）就目前情况看，氢气作燃料的汽车要投入使用前，你认为还要研究解决的问题有：____ ．

（3）若实验用氢气汽车运行1km，需要2.858×10⁶J能量．现这辆车在我市沿江路上走一圈（约30km），需____ g氢气．（已知每克氢气燃烧放出1.429×10⁵J能量）．

下列说法正确的是（   ）