葡萄糖是细胞进行有氧呼吸最常利用的物质。将一只实验小鼠放入含有放射性¹⁸O₂气体的容器中，¹⁸O₂进入细胞后，最先出现的放射性化合物是( 　　)

马克思主义哲学实现的两个结合和统一是指（   ）

①辩证法与唯物主义的结合和统一

②辩证唯物的自然观和辩证唯物的历史观的结合和统一

③世界观与方法论的结合和统一

④本体论与认识论的结合和统一

    When I was waiting for a bus at a station, I saw a young man get into a telephone box near the station. After a short time, he came out and____ very sad (难过的). As he saw me, he came over.

    "Good afternoon, sir," he said. "____ was Abraham Lincoln born, do you know?"

    I felt a little ____ at his words. "Something may be wrong (有毛病的) with him," I thought. Then he asked ____ and I could see that he was not joking (开玩笑). So I thought for a minute and ____ him that Abraham Lincoln was born in 1809.

    The young man thanked ____  turned around and walked into the telephone box again. A few minutes later, he came out ____. He thanked me again and told me that he wanted to make a telephone call to his friend but he ____ his telephone number.

    "You ____ me remember it," he said. "His telephone number is '180909', and you can remember it easily ____ you know when the great man was born."