问题补充：
For many in the United States, Arab-Americans are an invisible part of the population. Though Arab-Americans as a community have made great contributions to American society in fields from literature to politics to medicine, many Americans know very little about Americans of Arab backgrounds.
Arab history in the United States goes back to the late 1800’s when large numbers of Arab immigrants first began making their journey to a land known simply as “Amreeka”.
Historians generally describe Arab immigration to America in two waves. The first wave took place between 1860 and 1924.The first wave consisted of Lebanese and Syrian, and some Egyptian immigrants. These new immigrants, who were mostly Christian, came to America in search of better opportunities. Even the doomed Titanic, which set sail for America in 1912,had close to a hundred Arab passengers aboard. The majority of Arab-Americans today are descendents of the first wave of immigrants; they are the third or more generation Americans.
The second wave of immigrants followed after World War Ⅱ,caused by political unrest in the Middle East. This second wave of immigrants consists of mainly Arab Muslims（穆斯林）and continues to this day.
Arab-Americans make up 3 million of the population in the United States, according to demographers. And quite different from popular belief, 64 percent of them are American-born. Eighty-two percent of Arab-Americans are US citizens.
Arab-Americans are beyond the national average in both education and income. Education is important among Arab-Americans; 82 percent have high school diplomas, 36 percent have bachelor’s degrees or higher, and 15 percent have graduate degrees. The-median（中位数的）average income among Arab-Americans is $39,580, which is higher than the US average.
【小题1】The first wave of immigrants took place because.A．all Arabs were Christian at that timeB．Arabs wanted to gain higher incomeC．the Second World War broke outD．Arabs wanted to hunt for a better development【小题2】The writer of this passage mentioned Titanic.A．to tell us that taking ship at that time was dangerousB．because Titanic became a well-known disasterC．to show us there were many Arabs flocking into America at that time D．to inform us that Arabs are brave enough【小题3】From the last paragraph we can infer that.A．Arab-Americans are much more clever than native AmericansB．the higher education you receive, the higher income you will get in AmericaC．Arab-Americans are hard-working people D．The-median average income among Americans is $39,580【小题4】Which of the following sentences is TRUE？A．Arab-Americans have made great contributions to American society only in literature.B．Arab history in the United States is to the early 1800’s.C．The first Arab immigration to America took place between 1860 and 1924.D．Few of Arab-Americans are US citizens.【小题5】 What would be the best title for the text?A．Arabs in America.B．The Two Arab Immigration Waves to America.C．Arab-Americans, Contributions to America.D．Arab-Americans, Education and Income.D
答案：
(答案→)D
解析：
【小题1】根据文章内容可知答案为D
【小题2】根据文章内容可知答案为C
【小题3】根据文章内容Arab-Americans are beyond the national average in both education and income. Education is important among Arab-Americans; 82 percent have high school diplomas, 36 percent have bachelor’s degrees or higher, and 15 percent have graduate degrees. The-median（中位数的）average income among Arab-Americans is $39,580, which is higher than the US average.答案为B
【小题4】根据文章内容可知答案为C
【小题5】根据文章内容大意可知答案为A
