题目

下图为元素周期表中短周期的一部分，下列说法错误的是 XY ZW A．W的原子序数可能是Y的两倍 B．单质的活泼性可能是Y>Z C．气态氢化物的稳定性X<Y D．Y、W的最高价氧化物对应水化物可能均为强酸 答案：【答案】D 【解析】 试题分析：由元素周期表的结构可知，X、Y一定位于第二周期，Z、W一定位于第三周期。如果Y的原子序数为x，则与之相邻同主族元素W的原子序数为x+8，x+8=2x时，x=8、x+8=16，即Y、W分别为第VIA族的氧、硫，故A正确；讨论：①若四种元素均为金属，根据同周期金属性递减、同主族金属性阅读理解。     On a warm Monday, Jenny Neilson bought a sandwich and parked her car under some trees. Rolling down the windows to let in fresh air, she settled back to enjoy her lunch. Suddenly she noticed a big bald man running through the parking lot. Before she came to realize what would happen, the man was there, shouting through her window, "Get out!"     Neilson refused.     Pulling open her door, the man seized her by the neck and hair, and threw her out of the car onto the ground. She screamed, grabbing her purse and the keys.     Two reporters of the local newspaper, Robert Bruce and Jeff Jackson, just outside their office building on a break, heard the screams and began running .     When they reached Neilson's car, the attacker had jumped into the driver's seat and was madly searching for the keys. Bruce opened the door, and he and Jackson dragged the man out. The attacker fought back. But even in his cornered panic, he was no match for the two athletic men.     Reggie Miller, a worker of the local newspaper, heard the screams, too. He rushed back to the office to phone the police, and then ran back with some plastic ropes-used to tie up newspapers.     With his arms tied tight behind him, the prisoner looked up and said coldly, "I hope you guys feel good about yourselves-you just caught one of the most wanted men." They ignored him and waited for the police. Later, Bruce and Jackson were shocked to learn the man was the professional carjacker (劫车者)and suspected murderer, whose picture-but with a full head of hair-had been recently printed in their own newspaper.                                                                                                                                    Neilson considers herself lucky though she suffered injuries. She believes the story might have had a different ending if those good people had not come to her aid. "Unfortunately," she said, "many people would never have done what they did, and that is the real truth."1. The underlined word "bald" in Paragraph 1 most probably means     ．  A. strong      B. without hair    C. ugly     D. rude2. Please arrange the time order of the following events according to the passage.a. Neilson was enjoying her lunch in the car.b. A man robbed Neilson of her car.c. The picture of the carjacker was printed in the local news paper.d. The carjacker was caught.A. abcd    B. dbca       C. cabd        D. abdc3. According to the passage , which of the following statements is True?A. The two reporters reported the story of the carjacker.B. The two reporters recognized the carjacker as soon as they saw him.C. Reggie Miller is also a reporter of the local newspaper.D. The carjacker was a suspected murderer the police had been searching for.4. What can be inferred from the last paragraph?A. Neilson considers herself lucky because she was not badly hurt.B. Neilson doesn't think many people will do the same as the three men.C. Neilson thinks everyone will do the same as the three men.D. Neilson has great confidence in people's kindness and bravery. 5. How is the story organized?A. According to the order of time.    B. Accoding to the order of space.C. By comparison.                D. By putting forward arguments to support an idea.