题目

某反应使用催化剂后，其反应过程中能量变化如图。下列说法错误的是 A．总反应为放热反应 B．使用催化剂后，活化能不变 C．反应①是吸热反应，反应②是放热反应 D．ΔH＝ΔH1＋ΔH2 答案：BA businessman was on a business trip to Tokyo(东京). One day he went to buy some gifts for his employees (雇员) back in his country. He entered a supermarket. A lady smiled and welcomed him. He was very touched, and felt good .Because he was not able to 1the warmth of her smile, he was watching her as he was2. She was giving the same3to all the people who walked into the supermarket. The businessman started thinking if she hated doing the same thing. So he asked, “My dear lady, are you4of doing this job?” The lady smiled and said, “No, sir, I have5here for the last 10 years and I love my job.” The businessman was surprised and asked, “Why have you stayed here for ten years, and why do you like your job 6much?” The lady said, “Because I am doing something good for my7.” The businessman found this interesting. He asked, “Why?” The lady said, “As most of our customers are8, they spend foreign currency(货币) here. So our country has a lot of money and becomes richer. People who are happy with our service will 9 more often and spend more money in our country.”Surprised by her10, the businessman thanked her. After returning to his own country he worked hard to introduce the same attitude (态度) to his workers, and today his company is one of the best companies in the world.1.A.requireB.enjoyC.hideD.forget2.A.travelingB.workingC.singingD.shopping3.A.feelingB.smileC.warmthD.watching4.A.fondB.tiredC.proudD.afraid5.A.stoodB.learnedC.workedD.lived6.A.soB.veryC.evenD.enough7.A.homeB.countryC.supermarketD.boss8.A.millionairesB.managersC.strangersD.foreigners9.A.singB.visitC.talkD.save10.A.actionB.serviceC.attitudeD.help