《中华人民共和国水法》规定，县级以上人民政府水行政主管部门、流域管理机构及其水政监督

如图所示是Zn和Cu形成的原电池，某实验兴趣小组做完实验后，在读书卡上的记录如下，则卡片上的描述合理的是(　　  )

卡片号：2　　2013.3.15，实验后的记录： ①Cu为负极，Zn为正极 ②Cu极上有气泡产生 ③SO42– 向Cu极移动 ④ 若有0.5mol电子流经导线，则可产生0.25mol气体 ⑤ 电子的流向是：Cu→Zn ⑥正极反应式：Cu ＋2e－ = Cu2＋

A．①②③         B．②④         C．④⑤⑥          D．③④⑤

结合语境，填入横线处最恰当的一项是[ ]

　　某一地区特定时间内游客数量超过其接待能力，是造成该地区旅游业种种问题的重要原因。接待能力若不提高，再美的湖光山色也会黯淡无光，_____________，再好的微笑服务也会丧失魅力。

A．再好的投入和开发也无济于事

B．再浓厚的游览兴趣也会逐渐消失

C．再迷人的青山绿水也会索然无味

D．再多的人文景观也会失去风采

I could have easily gone through life without getting to know one of the most romantic feelings－love for a dog.         For at least years my    1      had been suggesting that we get a dog. There were several reasons why the idea came up. We had noticed that, on our block, couples with no children as a rule     2   one large or two small dogs. So we got one puppy since we had no children, either.         He flew into the house at high     3    . In several minutes he ran over all the house, jumped from my shoulder onto the bed, and ended up in the   4    , where my wife washed him with motherly   5    . From that day on, the invisible(看不见的) war for the love of my new member of our family began at my home. He seemed to      6   that at once. Most of the meals that my wife had      7__ for him with greater care than those for me－he didn't even look at.         Every evening I went out walking with him. I could not know who was walking whom until one evening, when, tired from work, I  _8    the walk. The dog was very angry and dragged me out.         Last night our dog pulled me by the ear with his teeth,    9      me up in my dream, and dragged me into the kitchen to make me turn off the  __10    which had disturbed his sleep. I meekly(乖乖地) admited that I had forgotten to switch off the light, but that was not   _11 . He looked at me like a teacher at a pupil who repeatedly makes mistakes.        Now we finally know who's the   12 _ at home, and for twenty years we had seriously argued whether it was my wife or I.

( )1. A.wife   ( )2. A.kept   ( )3. A.speed   ( )4. A.yard   ( )5. A.worry   ( )6. A.doubt   ( )7. A.reached ( )8. A.gave in ( )9  A.broke   ( )10. A.water ( )11. A.enough ( )12. A.adult B.son     B.rose     B.shape   B.street   B.care     B.undertand B.searched B.gave up B.woke     B.heater   B.good     B.member         C.husband     C.carried     C.cost       C.bathroom     C.ability     C.wonder     C.looked     C.gave away   C.picked     C.cooker     C.bad         C.boss      D.daughter       D.invited       D.race           D.kitchen       D.power         D.dislike       D.prepared       D.gave out       D.packed         D.light         D.true           D.child

我国21世纪可持续发展的总体目标是推动整个社会走上( )的文明发展道路。

A．工业高度化
B．社会信息化
C．经济现代化
D．生产发展、生活富裕、生态良好

关于施工组织流水作业中时间参数有关的问题，下列不正确的是( )。

A．流水节拍是某个专业队在一个施工段上的施工作业时间
B．主导施工过程中的流水节拍应是各施工过程流水节拍的平均值
C．流水步距是两个相邻的工作队进入流水作业的最小时间间隔
D．工期是指第一个专业队投入流水作业开始到最后一个专业队进入流水作业止的延续时间