The curtain on the 2008 US presidential election finally rose last month as John McCain an

The curtain on the 2008 US presidential election finally rose last month as John McCain and Barack Obama were formally nominated (提名) as candidates of the two major parties. This may be one of the hardest decisions voters have to make between two appealing candidates.

The big question for voters, as they face both an economic downturn and international threats, is: who will they elect? A young first-term senator promising change and new ideas, or a longtime senator with strong military experience and a reputation as a maverick (特立独行的人)?
    American voters have never seen a candidate quite like Obama. He has a white mother from the US and a black father from Kenya who left the family when Obama was very young. He spent part of his youth in Indonesia.
    His supporters say Obama’s childhood gives him the advantage to repair the recent damage done to America’s image abroad. His opponents focus on his inexperience, noting he hasn’t finished his first term in the Senate.   

However, McCain has a very different life story.

He grew up in a Navy family and was a pilot during the Vietnam War in the 1960s. When Obama was in kindergarten in Indonesia, McCain’s plane was shot down over Vietnam and he became a prisoner of war. McCain could have been released if he disowned America but he refused and so was held for five years.

So in the end, the election may hinge on (以…为转移) several factors that are hard to judge: Will Obama’s race matter to a significant number of voters? Will working-class whites who tended to support his primary opponent, Hillary Clinton, vote for Obama? And perhaps most important of all, will swing (摇摆) voters be more drawn to Obama’s vision (远景规划) or to McCain’s experience?

Whatever happens, one thing is clear: Whoever walks into the White House on January 20, 2009, will find enormous challenges waiting for him in the Oval Office, both at home and abroad.

72. ______ makes the result of the election hard to predict.

A. Whether working class whites care about Obama’s inexperience

B. The economic trouble the country now faces

C. Who swing voters will finally decide to vote for

D. McCain’s being too old to govern the country

73. The appeal in Obama as a presidential candidate lies in ______.

    A. his multi-cultural background                 B. his belief in tradition

    C. his inexperience in politics                      D. his fantastic promises

74. The word “disown” in Paragraph 6 means closest to ______.

    A. run away from                                     B. turn one’s back on

    C. not keep it private                                  D. expose secrets about

75. The challenges that will face the new president are ______.

A. not mentioned in the text

B. building a strong party and a friendly image

C. the problems of immigrants and economy

D. the problems of economy and international relations