Teaching and Learning Many teachers believe that the responsibilities for learning lie with the student. If a long reading assignment is given, instructors expect students to be {pz_填空}(51) with the information in the reading even if they do not discuss it in class or {pz_填空}(52) an examination. The ideal student is{pz_填空}(53) to be one who is motivated to learn for the sake of learning, not the one interested only in getting high {pz_填空}(54). Sometimes homework is returned with brief written {pz_填空}(55) but without a grade. Even if a grade is not given, the student is {pz_填空}( 56 ) for learning the material assigned. When research is {pz_填空}(57), the professor expects the student to take it actively and to complete it with minimum {pz_填空}(58). It is the student’s responsibility to find books, magazines, and articles in the library. Professors do not have the time to {pz_填空} (59) how a university library works; they expect students to exhaust the {pz_填空}(60) resources in the library. Professors will help students who need it, {pz_填空}(61) prefer that their students should not be too {pz_填空}(62) on them. In the United States professors have many other {pz_填空}(63) besides teaching, such as administrative or research work. Therefore, the time that a professor can spend {pz_填空}(64) a student outside of class is limited. If a student has problems with classroom work, the student should either {pz_填空}(65) a professor during office hours or make an appointment.

单选题The view from my bedroom window was absolutely spectacular.

单选题We have to change the public’s perception that money is everything.

单选题The Changing Middle Class The United States perceives itself to be a middle-class nation. However, middle class is not a real designation, nor does it carry privileges (特权).It is more of a perception, which probably was as true as it ever could be right after World War II. The economy was growing, more and more people owned their own homes, workers had solid contracts with the companies that employed them, and nearly everyone who wanted a higher education could have one. Successful people enjoyed upward social mobility. They may have started out poor, but they could become rich. Successful people also found that they had greater geographic mobility. In other words, they found themselves moving to and living in a variety of places. The middle class collectively holds several values and principles. One strong value is the need to earn enough money to feel that one can determine one’s own economic fate. In addition, middle-class morality (道德观)embraces principles of individual responsibility, importance of family, obligations to others, and believing in something outside oneself. But in the 1990s those in the middle class found that there was a price for success. A U.S. News World Report survey in 1994 indicated that 75 percent of Americans believed that middle-class families could no longer make ends meet. Both spouses (配偶)now worked, as did some of the children , long commutes (通勤)became routine, the need for child care put strains on the family, and public schools were not as good as they once were. Members of the middle class were no longer financing their lifestyles through earnings but were using credit to stay afloat (透支).The understanding of just what middle class meant was changing. In the years after World War Il，the middle class were {pz_填空}.

单选题Flying into History When you turn on the television or read a magazine, celebrities (名人）are everywhere. Although fame and the media play such major roles in our lives today, it has not always been that way. {pz_填空}(46) Many historians agree that Charles Lindbergh was one of the first major celebrities, or superstars. Lindbergh was born in Detroit, Michigan, in 1902，but he grew up in Little Falls, Minnesota. As a child, he was very interested in how things worked, so when he reached college, he pursued a degree in engineering. At the age of 20，however, the allure (诱惑） of flying captured Lindbergh’s imagination. {pz_填空}(47) Soon after, Lindbergh bought his own plane and traveled across the nation performing aerial stunts (空中特技）. In 1924，Lindbergh became more serious about flying. He joined the United States military and graduated first in his pilot class. {pz_填空}(48) During the same time，a wealthy hotel owner named Raymond Orteig was offering a generous award to the first pilot who could fly nonstop from New York City to Paris, France. The Orteig Prize was worth $25,000—a large amount even by today’s standards. Lindbergh knew he had the skills to complete the flight, but not just any plane was capable of flying that far for that long. {pz_填空}(49) On May 20，1927，Charles Lindbergh took off from Roosevelt Field in New York City and arrived the next day at an airstrip (简易机场）outside Paris. Named in honor of the sponsor, The Spirit of St. Louis carried Lindbergh across the Atlantic Ocean and into the record books. He became a national hero and a huge celebrity. When he returned to the United States，Lindbergh rode in a ticker-tape (热烈的) parade held to celebrate his accomplishment. {pz_填空} (50) A very popular dance was even named for Charles Lindbergh — the Lindy Hop. Today, The Spirit of St. Louis is kept at the Smithsonian Institute’s National Air and Space Museum in Washington, D.C.

单选题A large crowd assembled outside the American embassy.

单选题Marsha confessed that she knew nothing of computer.

单选题The story was published with the sole purpose of selling newspapers.

单选题We have to act within the existing legal framework.

单选题A number of theories have been proposed to explain the situation.

单选题He went to attend the party with decent clothes.（）