单项选择题
______ is the leading general of the South in the American Civil War.
单项选择题 At beginning of the 2nd world war, Britain took the policy of ______.
单项选择题 What is the relationship between the following two sentences (a) He married a blonde heiress. (b) He married a blonde.
单项选择题 When the Cold War began, who was the president of U.S.A
