题目

下列各组物质制成的无色透明液体，能通过丁达尔现象鉴别的是（    ）A.葡萄糖和蔗糖                            B.蛋白质和甘氨酸C.麦芽糖和甘油                            D.淀粉和蛋白质 答案：DAlcohol is often taken as a symbol of a special celebration or as a sign of friendship．So it is    36   to see people toasting with a large glass of alcohol to the health or fortune.   37  , every year, alcohol also ruins thousands of lives and destroys many happy families .  Some people drink alcohol to   38    their tension or pain. They   39   think that through drinking, they can   40    from their problems and worries. But it is never a   41  ．During those hours of drinking, alcohol only numbs（麻木）their senses and makes them forget their worries.   42  , when they wake up, their problems are still unsolved .A   43   alcohol drinker is running the great   44  of getting heart diseases and liver（肝脏）failure. Too much alcohol taken into the body system, death will    45   occur. Alcohol also affects unborn babies    46  . Those pregnant mothers with    47    alcohol in their blood system risk    48  their unborn babies to suffer from defects（缺陷）at birth.     49   , babies are innocent victims due to their mothers’ mistake. Therefore they should be extremely cautious of any alcohol and it is better to    50   all drinking during pregnancy(怀孕期).  Drunken driving is one of the worst   51   of alcohol abuse. Every year, many lives are lost due to   52   driving on roads and highways. A drunk driver cannot see and judge the distance   clearly and will find it difficult to control his vision and   53    on the road，so he    54    control over his reflexes. That is    55   accidents occur. Not only does he hurt himself but also other innocent road users.36.A.normal                 B.common             C.ideal                  D. regular37.A.Accidently            B. Fortunately        C.Excitedly           D. Unfortunately38. A. relieve                      B.increase              C.create                 D.produce39. A.usually                B.surely            C. mistakenly            D. aimlessly40. A.differ                  B. solve                 C. cancel              D. escape41. A. success               B. solution            C. fact                  D. decision42. A. However             B. Meanwhile        C. So                   D. Besides43. A. social                 B. heavy                  C. addicted           D.light44. A.advantages           B.possessions         C.risks                  D.measures45. A. eventually           B. probably           C.hardly                D.strongly46. A.anxiously            B. disastrously          C. extensively        D.differently47. A. proper                B.little                  C. excessive           D.no48. A. causing              B.making                     C. having              D.protecting49. A.Above all             B.First of all          C.All in all           D. After all50.A. run out                      B.leave out            C. cut out             D.carry out51.A. reasons                      B. causes              C. effects              D. examples52. A. drunken             B.normal               C.careless              D. dangerous53.A. patience              B.emotion             C. judgement         D.imagination54.A.manages to           B.tries to               C.refuses to           D.fails to55.A.when                    B.what                  C.where            D. how