题目

如果方程a＋2x＋1＝0有两个不等实数根，则实数a的取值范围是_______． 答案：a<l且a≠0        第二节：完形填空.(共20小题;每小题1.5分,满分30分)阅读下面短文,从短文后所给各题的四个选项中,选出可以填入空白处的最佳选项.Chinese President Hu Jintao met Russian Prime Minister Vladimir Putin Saturday in Moscow __36___views on the development of the strategic relations of cooperation and partnership between China and Russia. President Hu is in Moscow for celebrations marking the 65th__37_of the victory of the Great Patriotic War over Nazi Germany. In recent years, China and Russia __38_ their strategic relations of cooperation and partnership __39__ enhanced mutual political trust and ___40__cooperation in all sectors.The two countries __41_have had close interaction and coordination in __42__international and regional affairs.Last year, the Chinese-Russian strategic ___43_of cooperation and partnership made important headway with activities __44_ the 60th anniversary of the establishment of bilateral diplomatic ties and the "Year of___45_Russian Language" in China. __46__the beginning of this year, the partnership has maintained comprehensive and___47__growth__48_a high level. President Hu's participation in the celebrations___49 a major event in China-Russia relations and symbolizes the spirit of bilateral(双边的)strategic cooperation,___50__China's Assistant Foreign Minister Cheng Guoping at a press briefing Wednesday."We believe Hu's visit will boost China-Russia strategic trust for__51_development of the bilateral strategic relations of cooperation and partnership," he said. This is__52_ time President Hu _ 53_ Russia's Victory Day celebrations.__54__ May 2005, President Hu attended in Moscow ceremonies marking the 60th anniversary of the victory of the Great Patriotic War. Five years __55__since that time .36. A . to communicate      B . to exchange           C . changing                  D . talked 37. A . celebration            B. meeting                 C . congratulation      D. anniversary38. A . strengthened        B. have strengthened     C. are strengthening    D .strenghths39. A . with                       B . for                      C . among                 D . between 40. A. fruitful                    B . richer                   C . fruits                    D . badly 41. A . too                         B either                     C . as well as             D . also 42. A . doing with                 B . treating  to          C . dealing with          D . making up43. A . relating                  B. relations                C . related                  D . relative44. A. remarks                   B. signs                     C. marking                 D. symbol45. A.  /                          B . a                         C. the                        D. this 46. A. Until                       B. After                     C . Since                    D . As long as 47. A . quick                        B. fast                       C. rapid                     D . swift48. A. by                          B. at                               C . to                         D. for49. A . is                           B. are                        C. have been                D. had been 50. A. said                        B. says                       C. spoken                   D. talks51. A . farther                    B. far                          C. furthest                  D. further 52. A. two                        B. the last                  C. the second              D. a more53. A. joined                       B. took part in              C. participates in          D. attends54. A. On                          B. By                        C. In                         D. At 55. A..passed                     B. has been passed           C. Past                        D. have past