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【单选题】
煤、石油、天然气是重要的能源和化工原料，下列说法正确的是A.
石油裂化得到气态烯烃
B.
石油裂解目的重油转化轻质油
C.
我国“输”工程的气指甲烷
D.
水煤气是通过煤的液化得到的气体燃料
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【判断题】Historians believe the story of the American nation and its culture begins with the 1492 discovery of the new world by English explorer Christopher Columbus.
A.
正确
B.
错误
【单选题】Explorer Christopher Columbus landed in America, but he thought he ________ the East India.
A.
had discovered
B.
has discovered
C.
discovered
D.
was discovering
【简答题】The first known and sustained contact between the Americas and the rest of the world,however,began with the famous voyage of an_________explorer,Christopher Columbus,funded by the Spanish rulers Ferdi...
【判断题】Columbus Day is especially popular for Italian American because Christopher Columbus who first discovered America is an Italian explorer
A.
正确
B.
错误
【单选题】The American Continent was discovered by Christopher Columbus but was named after ________ another explorer.
A.
Marco Polo
B.
Christopher Columbus
C.
Ferdinand Magellan
D.
Amerigo Vespucci
【判断题】Columbus Day is especially popular among Italian Americans because Christopher Columbus who first discovered America is an Italian explorer.
A.
正确
B.
错误
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