题目

下列说法正确的是（   ） A . 氯化钠固体不导电，所以氯化钠是非电解质 B . 向纯水中加入碳酸钠能使水的电离平衡正向移动，水的离子积增大 C . 如右图研究的是铁的吸氧腐蚀，实验中红色首先在食盐水滴的中心出现 D . 常温下，反应4Fe（OH）2（s）+2H2O（l）+O2（g）═4Fe（OH）3（s） 的△H＜0△S＜0 答案：D阅读短文，选择最佳答案。James likes sports, so he’s tall and strong in the middle school. Now his father and mother work in London. So he begins to study in a middle school here. He’s a member of the school rugby team. He likes the game very much and plays it on Saturday and Sunday. His grandma lives in a small village and one day she comes to see him. It’s Saturday and she doesn’t see the boy at home. So she goes to look for him in the school, she sees thirty boys stealing only one ball. The old woman tells James to finish playing and going home with her. “But, Grandma, I...” “Don’t play with them, my dear!” says the old woman. “I’m going to buy a ball for you!”【1】James is strong because _____. ( )A.he’s tallB.he’s a studentC.he likes sportsD.he’s good at his lessons【2】James lives _____ now. ( )A.in a villageB.in LondonC.with his grandmaD.in the team【3】James _____ on Saturday and Sunday. ( )A.plays rugbyB.plays footballC.does some houseworkD.helps his parents【4】_____, so the old woman doesn’t find him at home. ( )A.James goes shoppingB.James leaves LondonC.James is studying at schoolD.James is playing rugby【5】_____, so she tells the boy to go home with her. ( )A.The old woman is going to the shopB.The old woman doesn’t know how to play rugbyC.The old woman buys a ball for JamesD.The old woman wants to go to her village