题目

请用所学化学知识解答下列问题。 （1） 常食用黑木耳可补充人体所需的铁元素，铁元素摄入不足可能会患症。 （2） 打开汽水瓶盖，有气泡冒出，说明气体溶解度随压强减小而。 （3） 钨可制作白炽灯泡的灯丝，原因是钨（写一条物理性质）。 （4） 工业生产中常用环保高效的新型消毒剂ClxOy（相对分子质量小于130）进行消毒。该物质中氯元素和氧元素的质量比为71︰64，则该消毒剂的化学式为。It seems that some people go out of their way to get into trouble. That’s more or less what happened the night that Nashville Police Officer Floyd Hyde was on duty.“I was on the way to a personal-injury accident in West Nashville. As I got onto Highway 40, blue lights and sirens (警笛) going, I fell in behind a gold Pontiac Firebird that suddenly seemed to take off quickly down the highway. The driver somehow panicked at the sight of me. He was going more than a hundred miles an hour and began passing cars on the shoulder. ”But Hyde couldn’t go after him. Taking care of injured people is always more important than worrying about speeders, so the officer had to stay on his way to the accident. But he did try to keep the Firebird in sight as he drove, hoping another nearby unit would be able to step in and stop the speeding car. As it turned out, keeping the Firebird in sight was not that difficult. Every turn the Pontiac made was the very turn the officer needed to get to the accident scene.Hyde followed the Pontiac all the way to his destination. At that point he found another unit had already arrived at the accident scene. His help wasn’t needed. Now he was free to try to stop the driver of the Firebird, who by this time had developed something new to panic about.“Just about that time,” Hyde says, “I saw fire coming out from under that car, with blue smoke and oil going everywhere. He’d blown his engine. Now he had to stop. ”“After I arrested him, I asked him why he was running. He told me he didn’t have a driver’s license.”That accident cost the driver of the Firebird plenty — a thousand dollars for the new engine — not to mention the charges for driving without a license, attempting to run away, and dangerous driving.【小题1】 Why did the driver of the Firebird suddenly speed down the highway? A．Because he was racing with another driver on the road.B．Because he realized he had to hurry to the accident scene.C．Because he wanted to overtake other cars on the shoulder.D．Because he thought the police officer wanted to stop him.【小题2】 Which of the following statements is true?A．Someone else was taking care of the injured person. B．The Pontiac reached its destination at the accident scene. C．Hyde knew where he was going by following the right car. D．The policeman was running after a speeder on Highway 40.【小题3】The driver of the Firebird _____.A．took a wrong turn on the wayB．had some trouble with his car C．was stopped by the police officer D．paid for the expenses of the accident【小题4】 What is probably the best title for the article?A．Losing His Way?B．Fun All the Way?C．Going My Way?D．Help on the Way?