题目

如图所示，电路元件及导线连接均完好，闭合开关S1、S2，则（    ） A．L1不能发光，L2能发光 B．L1能发光，L2不能发光 C．L1 L2都能发光 D．L1 L2都不能发光 答案：B阅读理解 阅读下列短文，从每题所给的四个选项(A，B，C和D)中，选出最佳选项． 　　In 1944 a 22-year-old Army medic was answering a battle-field cry for help when fragments of an exploding German shell tore into him. “Geedoc, I feel like both my arms were blown off,“George Lott told his battalion's surgeon as he staggered into a first-aid station near the front in northeastern France. It was the beginning of a painful 5 000 mile journey through three hospitals as the doctor tried to save the medic's life. 　　After five operations and two and a half years in Army hospitals, Lott, a righty, regained use of his left arm, but his right was painfully paralyzed.“I begged the doctors to cut off my arm,” he recalls. They did. 　　An orphan since he was two, with a third grade education, Lott has pension and Social Security for the past 40 years. In 1962 he bought a house in Albany, NY, not far from the Adirondack Mountains where he hunts and fishes. He still has the Purple Heart awarded him after he was wounded, although he has had a difficult time keeping it. His girlfriends, explains the bachelor, have wanted to wear it.“Sometimes I still dream about the guys I held in my arms that were dying,”says Lott, “I'm proud that I fought for my country, but I'm still here, drinking beer. The guys who didn't come back are the real heroes.” 1．George Lott got wounded when he was ________. [　　] A．fighting shoulder-to-shoulder with soldiers of his battalion B．fighting with French soldiers C．in a battlefield crying for help D．running toward a wounded soldier who was crying for help 2．The word “righty” in the second paragraph most probably means ________. [　　] A．a person who has always been correct in conduct B．a person who has done the right thing C．a person who has used his right hand more readily than his left hand D．a person who has courage 3．From this passage we can infer that ________. [　　] A．Lott's recovery was long and painful B．he lost both his arms C．he never got a job after he was wounded D．both A and C 4．Which of the following is true? [　　] A．Lott didn't think much of his wartime service. B．Lott and his girlfriend are proud that he fought for his country. C．Lott feels ashamed that he is still drinking beer. D．Lott lost his Purple Heart.