You can’t buy happiness. However, it looks(1)______you can at least inherit it, British and Australian researchers said. A s

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问题     You can’t buy happiness. However, it looks(1)______you can at least inherit it, British and Australian researchers said.
    A study of nearly 1, 000(2)______ of identical and non-identical twins found genes(3)______ half the personality traits that make people happy(4)______ factors such as relationships, health and careers are responsible for the rest of our well-being. " We found that around half the(5)______ in happiness were genetic ," said Tim Bates, a researcher at the University of Edinburgh who led the study. " It is really quite(6)______. " The researchers asked the volunteers—(7)______in age from 25 to 75—a series of questions about their personality, how they worried and how satisfied they were (8)______ their lives. Because identical twins share the(9) ______ genes and non-identical twins do not, the researchers could identify common genes that(10)______ certain personality traits and predispose people to happiness.
    People who are sociable, active, stable, hardworking and conscientious (11)______ to be happier, the researchers reported in the journal Psychological Science. " What this study showed was(12)______the identical twins in a family were very similar in personality and in well-being, and(13)______, the non-identical twins were only around half as similar," Bates said. "That strongly (14)______ genes. " The(15)______are an important piece of the puzzle for researchers(16)______ to better understand depression and(17)______makes different people happy or unhappy, Bates said. People with positive inherited personality traits may, in effect, also have a reserve of happiness to(18)______ in stressful times,he said.
    "An important implication is that personality traits of being(19)______, calm and reliable provide a resource, we called it ’ affective reserve,’ that(20)______ future happiness" Bates said.
(13)

选项 A、in fact
B、on the other hand
C、by contrast
D、on the contrary

答案C

解析 语篇衔接题。根据这句话的意思,可判断作者将同卵双胞胎和异卵双胞胎在性格特征和快乐程度的相似性方面进行了对照,故选[C]by contrast,表示“和……成对照,和……比起来”。[A]in fact表示“实际上,事实上”,[B]on the other hand表示“另一方面”,[D]on the contrary表示“正相反”,均与句意不符。
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