A) twice B) 3 times C) 5 times D) more than 5 times
2) In 1912, before July 4, the U. S. flag had _____.
A) 15 stars B) 20 stars C) 46 stars D) 48 stars
3) The 49th and 50th states to join the U.S.A. were, in their correct order, _____.
A) Alaska and Hawaii. B) Hawaii and Alaska
C) New Mexico and Arizona D) Arizona and New Mexico
4) Congress decided in 1818 that the U. S. flag should have 13 stripes because ______.
A) since 1777 it had always had 13 stripes.
B) since 1777 it had always had more than 13 stripes.
C) in 1818 there were only 13 states in the Union of the U. S. A.
D) at the founding of the Union of the U. S. A. there had been only 13 states.
问题要求回答美国国旗图案自1777年以来变化了几次。回答这样的题目须把文中所有提及1777以年来美国国旗变更次数的关键词语划出:1795; July 4,1818; since 1912; a year earlier the 49th;July 4,1960
文中似乎只提及5处, 但是文内又提到1818年时为20颗星, 以后每加入一个州增加一颗星。从文中又可看出1912年增加的是第47和48颗星,从第20颗星到47颗星之间必然还有若干次变动, 因此答案应为D。
问题提问的是1912年7月4日以前的情况。由于新墨西哥和亚里桑那于1912年7月4日加入联邦, 国旗上星的数目增至48颗。因此。1912年7月4日以前国旗上的星数应为46颗。正确答案为C。
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