简答题\n Why did eleven southern states secede from the Union after Lincoln’s election? A、 Missouri was admitted as a slave state while Main was admitted as a free state. B、 California was admitted as a free state while Utah and New Mexico were allowed to decide for themselves with regards to slavery. C、 There were afraid that Lincoln would require newly admitted states to be free. D、 They were afraid that Lincoln would abolish slavery in the country.\n简答题\n Which region has the highest mountain range in north America? A、 Pacific Coast B、 Rocky Mountains C、 Appalachian Mountains D、 Canadian Shield\n简答题\n Rapid growth of industries was headed by a collection of colorful and energetic tycoons who were know as “captains of industries” or “robber barons”. The following are the examples except for A、 John D. Rockefeller of the Standard Oil Company B、 Andrew Carnegie of steel industry C、 J. P. Morgan of the investment banking firm D、 Cyrus McCormick of the railroad industry.\n简答题\n At the Second Continental Congress, the committee charged with the responsibility to draft the Declaration of Independence was headed by A、 Benjamin Franklin B、 Thomas Jefferson C、 John Adams D、 Robert Livingston\n简答题\n Which plain is rich in petroleum? A、 the Great Plains B、 the Atlantic Plain C、 the Central Plains D、 the Gulf PlainD.\n