题目

已知地球赤道上的物体随地球自转的线速度大小为v1、向心加速度大小为a1，近地卫星线速度大小为v2、向心加速度大小为a2，地球同步卫星线速度大小为v3、向心加速度大小为a3。设近地卫星距地面高度不计，同步卫星距地面高度约为地球半径的6倍。则以下结论正确的是                                                                   （    ）        A．          B．              C．            D．A woman came out of her house and saw three old men with long white beards sitting in her front yard. She said, “I don’t think I ___36___ you, but you must be very hungry. Please ___37___ and have something to eat.” “Is the man of the house ___38___?” they asked. “No,” she replied, “He’s out.” “Then we cannot come in,” they replied. In the evening when her ___39___ came home, she told him what had happened. “___40___ them I am home and invite them in!” The woman went out and invited the men in. “We do not go into a house ___41___,” they replied. “Why is that?” she asked. One of the old men explained, “His name is Wealth,” he said ___42___ one of his friends, “and he is Success, and I am Love.” Then he added, “Now go in and ___43___ your husband which one of us you want in your home.” The woman went in and told her husband what was said. The husband was ___44___. “How nice!” he said. “Since that is ___45___, let us invite Wealth. Let him come and fill our home with wealth!” His wife ___46___. “My dear, why don’t we invite Success?” Their daughter-in-law was listening from the other corner of the house. She jumped in with her own ___47___, “Wouldn’t it be better to invite Love? Our home will then be filled with love.” “Let us ___48___ our daughter-in-law’s advice,” said the husband to his wife. “Go out and invite ___49___ to be our guest.” The woman went out and asked the three old men, “Which one of you is Love? Please come in and be our ___50___.” Love got up and started walking toward the house. The other two also got up and ___51___ hin. ___52___, the lady asked Wealth and Success, “I only invited Love. Why are you coming in?” The old men answered together, “If you ___53___ Wealth or Success, the other two of us would have stayed out, but ___54___ you invited Love, wherever he goes, we go with him. ___55___ there is Love, there is also Wealth and Success!” 36. A. like           B. know          C. recognize          D. need 37. A. go out         B. get away       C. get up             D. come in 38. A. home          B. room          C.family             D. office 39. A. friend         B. father          C. brother           D. husband 40. A. Go tell        B. Do tell          C. Go ask            D. Do ask 41. A. one by one     B. one after another   C. along          D. together 42. A. laughing at    B. looking at        C. pointing to        D. staring at 43. A. argue with     B. discuss with      C. debate with       D. quarrel with 44. A. overjoyed      B. surprised        C. excited           D. worried 45. A. the situation    B. the position      C. the case          D. the point 46. A. agreed         B. appreciated      C. nodded          D. disagreed 47. A. suggestion      B. plan            C. solution          D. explanation 48. A. discuss         B. take            C. consider          D. ignore 49. A. Success         B. Wealth         C. Love             D. them 50. A. friend           B. relative        C. son-in-law         D. guest 51. A. followed         B. stopped        C. honored          D. pleased 52. A. Pleased          B. Surprised      C. Delighted         D. Disappointed 53. A. invited           B. invite         C. had invited        D. have invited 54. A. when            B. while          C. if                D. since 55. A. wherever         B. however       C. whenever         D. whatever