It is December 25th，2050．The people in the city are all celebrating Christmas．I'm the mayor of our city．My citizens*and I are holding a big party under the sea，though you wouldn't believe it．But please do not feel excited，you should feel sad because we have to live under the sea．Because of the pollution，the earth has been completely destroyed，from top to bottom．The atmosphere*has no oxygen*and moisture*．As a result，the plants are burned by the strong sunlight with a great number of harmful rays．Of course，none of them are still alive．Not only no green，but also the temperature reaches about 121℃all day even in winter because there is too much CO2circling the earth．
19．根据下面每段话的陈述内容，从方框中选出各段恰当的主题句（其中一项为多余选项）．
56．Jim Brown always felt sad．His friend told him to swim with a dolphin．He made friends with a dolphin called Polly．Then his life changed．Polly made him happy again．A
57．Mr and Mrs Smith had a clever bird．Their son，Robert，often travelled a lot in his work．The birdC
58．My friend and I had a picnic in a quiet place and played some music on a CD player．Later，we were amazed to find some cows listening to the music carefully around us．D
59．In France，a man with his dog had to move to a new job 200kilometers away．He left his cat at his old house．About three weeks later，the dog went away．Then seven weeks later，the dog and the cat came back together．They were tired and hungry after their long travel．F
60．A friend was moving to another country，so we took his pet goldfish back and put it in a bowl with our goldfish．After six months，my friend came back and took it home．The next day both his goldfish and mine died．I believed the departure broke their hearts．B．
| A．An animal that helped an unhappy man． B．An animal that died of a broken heart． C．An animal that knew when its owner was coming back． D．An animal that loved music． E．An animal that learned more about talking from the talk show． F．An animal that tried to find the old friend． |
57．Mr and Mrs Smith had a clever bird．Their son，Robert，often travelled a lot in his work．The birdC
58．My friend and I had a picnic in a quiet place and played some music on a CD player．Later，we were amazed to find some cows listening to the music carefully around us．D
59．In France，a man with his dog had to move to a new job 200kilometers away．He left his cat at his old house．About three weeks later，the dog went away．Then seven weeks later，the dog and the cat came back together．They were tired and hungry after their long travel．F
60．A friend was moving to another country，so we took his pet goldfish back and put it in a bowl with our goldfish．After six months，my friend came back and took it home．The next day both his goldfish and mine died．I believed the departure broke their hearts．B．
16．
41．The movie is soboring，I can't stand it at all．
42．Swimmingis Tom's favorite sport，it is good for health．
43．For breakfast，Mary often haspotatoes，milk and eggs．
44．Gina cooks dinner forherself when her parents are out．
45．When I got to the top of the mountain，I couldhardly walk anymore．
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| hardly boring swim herself potato |
42．Swimmingis Tom's favorite sport，it is good for health．
43．For breakfast，Mary often haspotatoes，milk and eggs．
44．Gina cooks dinner forherself when her parents are out．
45．When I got to the top of the mountain，I couldhardly walk anymore．