经过枣庄市的铁路干线是（ ） A．京广线 B．京沪线 C．京九线 D．陇海线

现代经济学家认为，当今由美国次贷危机引发的世界性经济危机席卷全球，它是继二十世纪二十年代以来的世界性经济大衰退。据此回答下列问题：

（1）二十世纪二十年代末世界性经济危机爆发于哪一年？最先在哪个国家爆发？

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（2）为了尽快摆脱经济危机，这个国家采取了什么应对方式？其中最主要的反危机措施是什么？

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（3）当时，作为世界上主要资本主义国家的德国和日本采取了怎样的措施来摆脱危机？它们的所作所为导致了世界上哪一重大事件的发生？最终结果如何？

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岳飞率领的岳家军主要抗击下列哪一 * *  ？              [ ]

A．西夏     

B．辽    

C．金      

D．元

单词拼写。

1.Sun Tao was an excellent student in his school and he won s       soon.

2.-Jack,I'm so happy because I have passed the important exam.

  -C       to you!

3.On her birthday Kate d       her room with nice flowers and balloons,which made it very beautiful.

4.The pills are too big and bitter so I don't think I can s       them.

5.I'm very happy to have the o       to talk to you.

6.Mr.Smith will marry Miss Jones.We have received their      (邀请).

7.It's good for us to drink      (开) water.

8.All of us should make a       (贡献) to humans.

9.Please bring me some soft drink with no      (酒精).

10.He turned off the light and the room was in complete      (黑暗).

3.2gCu与过量的8mol/L30mLHNO₃反应，硝酸的还原产物为NO₂和NO，反应结束后测得溶液中n(H⁺)为amol，则溶液中所含n(NO₃^-)为

A．amol

B．(0.1+a)mol

C．(0.05+a)mol

D．(0.2+a)mol

充水强度含义是何，汾孝矿区充水水源及通道是什么？