单项选择题

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Dwight attended Lincoln elementary school, directly across the street from his home. The curriculum emphasized rote learning. "The darkness of the classrooms on a winter day and the monotonous hum of recitation," Eisenhower wrote in his memoirs ...” are my sole surviving memories. I was either a lackluster student or involved in a lackluster program." He came to life for the spelling bee and arithmetic. Spelling contests aroused in him his competitive drive and his hatred of careless mistakes —he became a self-confessed martinet on the subject of orthography. Arithmetic appealed to him because it was logical and straightforward —an answer was either right or wrong.
The subject that really excited him, however, was one that he pursued on his own, military history. He became so engrossed in it, in fact, that he neglected his chores and his schoolwork. His first hero was Hannibal. Then he became a student of the American Revolution, and George Washington excited his admiration, He talked history to his classmates so frequently that his senior yearbook predicted that he would become a professor of history at Yale (it also predicted that Edgar would become a two-term President of the United States).
During Dwight’s high school years his interests were, in order of importance, sports, work, studies, and girls. He was shy around the girls and in any case wanted to impress his male classmates as a regular fellow, just one of the gang. Paying too much attention to the girls was considered somewhat sissy. He was careless of his dress, his hair was usually uncombed, and he was a terrible dancer on the few occasions he tried the dance floor.
Studies came easily to him and he made good to excellent grades without exerting himself. He got all Bs in his freshman year, when. the subjects were English, physical geography, algebra, and German. He did a bit better the next year, and as a junior and senior he was an A or A-plus student in English, history, and geometry. His sole B was in Latin.
Sports, especially football and baseball, were the center of his life. He expended far more energy on sports than he put into his studies, lie was a good, but not outstanding, athlete. He was well coordinated, but slow of foot. He weighed only 150 pounds. His chief asset was his will to win. He loved the challenge of the games themselves, enjoyed the competition with older and bigger boys, bubbled over with pleasure at hitting a single to drive in the winning run or at throwing the other team’s star halfback for a loss.
It was in sports that he first discovered his talents as a leader and an organizer. As a boy, he provided the energy and leadership that led to a Saturday-afternoon game of football or baseball. Later, he was the one who organized the Abilene High School Athletic Association, which operated independently of the school system. Little Ike wrote to schools in the area to make up a schedule, and solved the problem of transportation by hustling his team onto freight trains for a free ride from Abilene to the site of the contest.
He also organized camping and hunting trips. He got the boys together, collected the money, hired the livery rig to take them to the camping site, bought the food, and did the cooking.
The central importance of sports, hunting, and fishing to Little Ike cannot be overemphasized. He literally could not imagine life without them.
Dwight was shy around the girls because he was ______.