北京奥运会期间对大量盆栽鲜花施用了S－诱抗素制剂，以保持鲜花盛开。S－诱抗素的分子结构如图，下列关于该分子说法正确的是（ ）
A．1 mol S－诱抗素的分子能与2molNaOH反应
B．能发生加成、取代、消去反应
C．S－诱抗素的分子式为C14H19O4
D．含有碳碳双键、苯环、羟基、羰基、羧基
答案：B
题目分析：A、分子中含有1个羧基，1 mol S－诱抗素的分子能与1molNaOH反应，A不正确；B、碳碳双键和羰基钠发生加成反应，羟基和羧基能发生取代反应，羟基能发生消去反应，B正确；C、根据键线式的结构可知，分子式是C15H20O4，C不正确；D、分子中不存在苯环，D不正确，答案选B。
点评：该题是中等难度的试题，试题基础性强，侧重对学生灵活运用基础知识解决实际问题的能力的培养。该题的关键是准确判断出分子中含有的官能团，然后结合具体官能团的结构和性质灵活运用即可，有利于培养学生的知识迁移能力和逻辑推理能力。该题的易错点是新型C。
“Cheese” — a metaphor (隐喻) for what we want to have in life，whether it is a job, a relationship, or money. Each of us has our own __26__of what cheese is, and we want to __27__it because we believe it makes us __28__. Once there lived four little characters. Two were __29__named Sniff and Scurry and two were little people named Hem and Haw. Every morning, the mice and the little people __30_their running wear and went to Cheese Station C __31__they found their cheese. It was such a large store(仓库) of cheese that Hem and Haw __32__moved their homes to be closer to it. One morning, Sniff and Scurry arrived at Cheese Station C and discovered there was __33__cheese. They weren’t surprised. __34__they had noticed the supply 35 cheese had been getting smaller every day; they were prepared for the result. They set out quickly to __36__new cheese. Later that same day, Hem and Haw arrived. “What? No cheese! Who moved my cheese?” Hem yelled(叫喊). They went home that night __37__and discouraged. The next day Hem and Haw __38__to Cheese Station C. But the situation hadn’t changed. Haw asked, “Do Sniff and Scurry know something we don’t know?” Hem __39__him and said, “What would they know? They are simple 40 and we are human beings. They cannot be __41__than we are.” Haw suggested, “Maybe we should 42 talking about the situation and just to look for some new cheese.” Haw decided to 43 Cheese Station C while Hem was more comfortable staying in the cheese less Station C. Meanwhile, Sniff and Scurry went farther 44 they found Cheese Station N. They found what they had been looking for. It was the biggest 45 of cheese the mice had ever seen.
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