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问题 选择题
在0～24之间，使
18x-12
24
为整数的x有（　　）
A．2个B．4个C．6个D．8个
答案

∵

18x-12
24
为整数，即
3x-2
4
为整数，

∴当3x=4k+2（k∈Z）时，

3x-2
4
为整数，

∴x可以取：2，6，10，14，18，22，共6个值．

故选C．

问答题

莱菔饮功效与作用
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材料分析题

材料一：在十七大报告中, 首次提到了“建设生态文明，基本形成节约能源资源和保护生态环境的产业结构、增长方式、消费模式”的理念。

材料二：福建团省委、省青年志愿者协会组织青年志愿者在福州、厦门开展节能减排宣传活动——“绿手帕行动”。

（1）为什么要建设生态文明？ 

                                                                                                                                                              

                                                                                                                                                              

                                                                                                                                                             

（2）建设生态文明体现了我国实施 ________战略，这个战略要求是：

                                                                                                                                                              

（3）课外活动：参加“绿手帕行动”节能减排志愿者行动。设计宣传小卡片： 

                                     宣传语                                                                                                              

生活细节节能减排金点子：

A、                                                                                                                                                         

B、                                                                                                                                                        

C、                                                                                                                                                         

                                                                                                                              签名：                  

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