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【简答题】

Those baby-faced people now have another reason to be smug (自鸣得意的 ): a new Danish study says looking young (47) means a longer life. Research suggests that people who look younger than their years also live longer.
In 2001, Danish researchers (48) physical and cognitive tests on more than 1,800 pairs of twins over aged 70, as well as taking photos of their faces. Three groups of people who didn’t know the twins’ real ages guessed how old they were. The researchers then (49) how long the twins (50) over 7 years.
The experts found that people who looked younger than their (51) age were far more likely to survive, even after they (52) for other factors like gender and environment. The bigger the difference in (53) age within any twin pair, the more likely it was that the older-looking twin died first.
They also found a possible biological (54) : people who looked younger also tended to have longer telomeres (端粒), a key DNA (55) that is linked to aging. People with shorter telomeres are thought to age faster. In the Danish study, the more fresh-faced people had longer telomeres.
The authors said that perceived age, which is widely used by doctors as a general (56) of a patient’s health, is a good biomarker of aging that predicts survival among people over age 70.
  • [A] actual[I] component
  • [B] predictor[J] apparently
  • [C] perceived [K] substance
  • [D] explanation [L] survived
  • [E] adjusted [M] indicator
  • [F] mentally [N] active
  • [G] tracked [O] conducted
  • [H] adopted

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参考答案:
举一反三

【单选题】有关端粒的叙述中,不正确的是()。

A.
由重复序列组成
B.
在正常体细胞中,新合成DNA链的端粒不会变短
C.
其长度决定细胞分裂次数,被称为有丝分裂计时器
D.
肿瘤细胞可以“永生”,关键在于其可以表达端粒酶

【单选题】在临床医学研究中,可以获得意外损伤赔偿的是()

A.
可预见的不良反应可以获得赔偿
B.
死亡者家属有权获得赔偿
C.
因参加试验而意外受损伤者有权力要求获得高额赔偿
D.
死亡者家属是无权力要求获得赔偿的
E.
对可预见的不良反应可以酌情给予赔偿

【单选题】端粒存在于( )。

A.
细胞质中
B.
中心体
C.
线粒体上
D.
染色体上

【单选题】参与端粒合成的酶是

A.
限制性内切酶
B.
RNA聚合酶
C.
核酶
D.
逆转录酶
相关题目:
【单选题】有关端粒的叙述中,不正确的是()。
A.
由重复序列组成
B.
在正常体细胞中,新合成DNA链的端粒不会变短
C.
其长度决定细胞分裂次数,被称为有丝分裂计时器
D.
肿瘤细胞可以“永生”,关键在于其可以表达端粒酶
【单选题】在临床医学研究中,可以获得意外损伤赔偿的是()
A.
可预见的不良反应可以获得赔偿
B.
死亡者家属有权获得赔偿
C.
因参加试验而意外受损伤者有权力要求获得高额赔偿
D.
死亡者家属是无权力要求获得赔偿的
E.
对可预见的不良反应可以酌情给予赔偿
【单选题】端粒存在于( )。
A.
细胞质中
B.
中心体
C.
线粒体上
D.
染色体上
【单选题】参与端粒合成的酶是
A.
限制性内切酶
B.
RNA聚合酶
C.
核酶
D.
逆转录酶
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