By the time I finished high school， my interest in animals had grown， and enrolled at a university to study biology. I learned soon enough that studying animals __56__ this level was not in the animals best ___57. I remember one midterm exam in ___58 each student was handed a large， freshly-killed frog and __59 to dissect (解剖) and mark a set of body parts. I looked at the ___60 frog in front of me and was saddened that her life was ___61 away for such a slight ___62.

　　A year later， in the same lab __63 I dissected the frog， I performed a small act of animal ___64. We were ___65 on fruit flies， and it was time to record the distribution of characteristics in their next generation. Flies were ___66 in small plastic bottles. Counting the number of flies with white or red eyes required first exposing them to ether(乙醚) ___67 they could not move. The flies were then spread onto a piece of white paper ___68 and counted. When the data collection was ___69， the flies had no further use， and our instructions were to ___70 them into a small glass dish of oil at the center of each desk， which was to be their final resting ___71.

　　Once may little pile of flies had been counted， I pushed them off the edge of the paper. As we recorded our data， I kept one eye___72 them. Within minutes the pile was humming(嗡嗡叫) as tiny legs and wings beat their way out of the ether fog. I was extremely excited as they ___73 flight. That was my first ___74 in refusing to conduct scientific research that treated nonhuman life in a(n) ___75 way.

　　56. A at B with C for D off

　　57. A duties B interests C rates D hobbies

　　58. A what B that C where D which

　　59. A dismissed B drawn C instructed D mended

　　60. A alive B dead C living D wounded

　　61. A made B brought C taken D passed

　　62 A reason B spirit C space D system

　　63. A that B which C what D where

　　64. A operation B liberation C tendency D wealth

　　65. A experimenting B strengthening C stimulation D substituting

　　66. A solved B soaked C recovered D kept

　　67. A while B because C incase D so that

　　68. A being examined B to be examined C being operated D to be operated

　　69. A preliminary B progressive C complete D curious

　　70. A put B raise C rouse D spoil

　　71. A shade B shadow C place D stuff

　　72. A for B with C at D on

　　73. A stood B took C sent D rode

　　74. A step B review C glance D gesture

　　75. A kind B generous C cruel D effective

　　Part Ⅴ

　　A

　　76 But the deeper answer is that the tales that have lasted are magical adventures that help children deal with the struggles and fears of their everyday lives.

　　77 Teenagers who don‘t get enough rest have more learning， health， behavior and mood problems than students who get at least nine hours a night.

　　78 The results have been encouraging： more sleep， increased attendance， better grades and fewer driving accidents.

　　79 More than one million young people in Britain are unemployed， the highest number since the mid-1980s.