which country belongs to Central Powers？

2. Emancipation Proclamation 的中文意思是什么？

3. Russia withdrew from World War I partly due to the _________.

4.Communist manifesto 的中文意思是什么？

5. “协约国”的英文表达是什么？

6. League of Nations was the subject of which conference？

7. Which countries that belonged to Allies Powers?

8. Who invented internal combustion engine?

9. In what era did the enterprise shown below was created ?

10. The leader of 1861 reform of serfdom in Russia ________ ?

11. Who united South America(南美洲北部) into a single country called Gran Colombia?

12. In 1822, Brazil became independent from its _________ rulers.

13._________ wrote The Communist Manifesto(《共产党宣言》) that marking the foundation of___________ .

14. Stephenson’s invention began the age of ___________.

15. The first Industrial Revolution began in ______.

16. Faraday's main contribution was the creation of thermal power plants(发电站).

17. The reasons of the WWI are the imblance and conflicts of European powers.

18. The power of Second Industrial Revolution was steam engine.

19.Peter I’s Reform in politics was increased the power of the central government(中央集权).

20. WWI lasted from 1914 to 1918.