题目内容
（请给出正确答案）
The author s attitude towards the sustainable transportation is______.
A．positive
B．critical
C．negative
D．doubtful
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根据以下资料，回答1~4题。 Uncle Sam is a tall, thin man．He's an older man with white hair and a white beard．He often wears a tall hat, a bow tie, and the stars and stripes of the American flag. Who is this strange-looking man？ Would you believe that Uncle Sam is the US government？ But why do you call the US government Uncle Sam？ During the War of 1812, the US government hired meat packers to provide meat to the army．One of these meat packers was a man named Samuel Wilson．Samuel was a friendly and fair man．Everyone liked him and called him Uncle Sam. Sam Wilson stamped the boxes of meat for the army with a large US for United States．Some government inspectors came to look over Sam's company. They asked a worker what the US on the boxes stood for．As a joke, the worker answered that these letter stood for the name of his boss, Uncle Sam. The joke spread, and soldiers began saying that their food came from Uncle Sam．Before long, people called all things that came from the government "Uncle Sam"．"Uncle Sam" became a nickname for the US government. Soon there were drawings and cartoons of Uncle Sam in newspapers．In these early pictures, Uncle Sam was a young man．He wore stars and stripes, but his hair was dark and he had no beard．The beard was added when Abraham Lincoln was President．President Lincoln had a beard. The most famous picture of Uncle Sam is on a poster from World War I．The government needed men to fight in the war．In the poster, a very serious Uncle Sam points his finger and says "I want YOU for the US Army." Uncle Sam often wears a tall hat, __, and the stars and stripes of the American flag. A．dark hair B．a bow tie C．a box D．a shirt
根据以下资料，回答5~8题。 Families separated by the Florida Straits were overjoyed Tuesday and Miami-based charter companies rushed to add seats and flights to their Havana routes after the Obama administration decided to let more Americans visit Cuba as often as they want, and spend as much as they like. The policy changes are sure to put more money into Cuba's dying economy, and many would-be travelers are already call for still more barriers to fall． Even Fidel Castro (菲德尔？卡斯特罗) , who had belittled the changes Monday, yielded Tuesday that they were "positive, although minimal". The United States still doesn't let most Americans without ties to Cuba visit the island or send in money．But the change, announced Monday by the Obama administration, was among the most significant openings in the half-century of hostilities between the two countries. During the Bush administration, Americans with immediate family members on the island could visit once every three years and send up to $100 a month to their families. Now, there are no limits to travel or expense, and the definition of family is expanded to include relatives as distant as second cousins, as well as anyone else who lives as "family" in the home of the authorized traveler. According to the article, what will this change in policy do for Cuba？ A．It will boost the Cuban economy． B．It will help defeat Fidel Castro． C．It will make more Cubans come to the United States. D．It will decrease the number of Cubans coming to the United States.
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