选词填空。阅读下面短文，掌握其大意，然后从方框中选出可以填入空白处的最佳答案。 A. primarily B. similar C. considerately D. connections E. instructed F. ser-高中英语-n多题

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选词填空。阅读下面短文，掌握其大意，然后从方框中选出可以填入空白处的最佳答案。

A. primarily B. similar C. considerately D. connections E. instructed
F. series G. personal H. served I. defined J. environment

     In a study of the University of Minnesota, twins (some raised together and others who had grown up apart)
were tested for a wide range of personality traits (特征). In terms of happiness-1______ as the ability to enjoy
life-twins who were separated soon after birth were much less alike than twins raised together. But when it
comes to unhappiness, the twins raised apart-some without contact for as long as 64 years-were as 2______
as those who had grown up together.
     Why is unhappiness less influenced by 3______? When we're happy we are more responsive to people and
keep up 4______ better than when we' re feeling sad.
     This doesn't mean, however, that some people are born to be sad and that' s that. Unhappiness may be related
to genes, but this inherited trait can be influenced by 5______ choice. You can increase your happiness through
your own actions.
     In a whole 6______ of experiments by psychologists John Reich and Alex Zautra at Arizona State University,
they asked students to select their favorite activities from a list of everyday pleasures- things like going to a
movie, talking with friends and playing cards.
     Then the researchers 7______ some of the students in the experiment to increase the number of favorite
activities they participated in for one month (the other participants in the study 8______ as controls (对照组)
and did not vary their activity level). Result: Those who did more of the things they enjoyed were happier than
those who didn't. The conclusion, then, is that the pleasure we get from life is 9______ ourselves to control.

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