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Scientists studying the impact of climate change on the Arctic need to consider ways to reduce their...

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motivation  perspective  impression  impact  
Right  Wrong  Not mentioned  
had been studying    have been studying    have studied    are studying  
Right  Wrong  Not mentioned  
daily amount of found may influence our health  less exercise may make us five longer  sleeping may have nothing to do with weight  pinythg with others may help us sleep better  
about one year  about a year and a half  about two years  about three years  
they run and play all day long  they eat only one cup of food a day  they live longer than the other groups  they are bored with the kind of food in the cup  
motivation  perspective  impression  impact  
motivation  perspective  impression  impact  
fuod and health  sleep and weight  weighi and exercise  exercise and equipment  
By analyzing the data published in journals like Nature and Ambio.  By observing the lead accumulations in different parts of the arctic area.  By studying the chemical elements of soil and snow in Northeastern America.  By comparing the chemical compositions of leaded gasoline used in various countries.  
To study  Studying  Study  By studying  
an, the    不填,the    an,不填    the , an  

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