题目

化学与生活密切相关。 (1)人们通过食物获取各种营养素。 ①下列食物中，能提供大量蛋白质的是       （填字母序号）。                 A．米饭             B．西红柿                 C．牛肉 ②为了防止骨质疏松，人体每日必须摄入足够量的________元素。 (2)食品安全日益受到人们关注。下列食品因有毒而不能食用的是     （填字母序号）。 A．葡萄酿制的酒                      B．花生油炒的菜 C．甲醛浸阅读理解。     Andy rode slowly on his way to school, day-dreaming about the fishing trip that his father had promised him. He was so busy dreaming about all the fish he would catch that he was unaware of everything else around him.      He rode along until a strange sound drew him to the present. He came to a stop and looked curiously upto the heavens. What he saw shocked and terrified him. A huge swarm of bees filled the sky like a black cloud and the buzzing mass seemed to be heading angrily towards him.      With no time to waste, Andy sped off in the opposite direction, riding furiously-but without knowing howto escape the swarm. With a rapidly beating heart and his legs pumping furiously, he sped down the rough road. As the bees came closer, his panic increased. Andy knew that he was sensitive to bee stings (蜇). Thelast sting had landed him in hospital-and that was only one bee sting! He had been forced to stay in bed for two whole days. Suddenly, his father's words came to him. "When you are in a tight situation, don't panic. Use your brain and think your way out of it."     On a nearby hill, he could see smoke waving slowly skywards from the chimney of the Nelson family home. "Bees don't like smoke," he thought. "They couldn't get into the house." Andy raced towards the Nelsonhouse, but the bees were gaining ground. Andy knew he could not reach the house in time. He estimated that the bees would catch up with him soon.     Suddenly, out of the corner of his eyes, he spotted a small dam used by Mr. Nelson to irrigate his vegetablegarden. Off his bike and into the cool water he lived, disappearing below the surface and away from the savageinsects. After holding his breath for as long as he could, Andy came up for air and noticed the bees had gone. Dragging himself out of the dam, he struggled up the hilly slope and rang the doorbell. Mrs. Nelson took himinside and rang his mother.      "You'll really need that fishing break to help you recover," laughed his mother with relief. "Thank goodness you didn't panic!" But Andy did not hear her. He was dreaming once again of the fish he would catch tomorrow. 1. Why did Andy fail to notice the swarm of bees earlier?A. He was riding to school. B. He was listening to a strange sound.C. He was going fishing with his father. D. He was lost in the thought of the fishing trip. 2. Which of the following is NOT mentioned about the swarm of bees in the passage? A. They crowded like a black cloud. B. They shocked and terrified Andy. C. They tried to attack Andy in a mass. D. They made Andy stay in hospital for two days. 3. How did Andy avoid the bees in the end? A. He asked Mr. Nelson for help. B. He did himself under the water.C. He rushed into the Nelson house. D. He rode off in the opposite direction. 4. Which of the following can best describe Andy's escape from the bees? A. No pains, no gains. B. Once bitten, twice shy. C. Where there is a will, there is a way. D. In time of danger, one's mind works fast.