Wilt Chamberlain is cited as an example to Which of the following plays a key role in body growth according to the text?

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问题 Wilt Chamberlain is cited as an example to
Which of the following plays a key role in body growth according to the text?

选项 A、Genetic modification.
B、Natural environment.
C、Living standards.
D、Daily exercise.

答案C

解析 判断题。出题依据点是原文第三段第三句带有but的转折句:But as diet and health improved, children and adolescents have, on average, increased in height by about an inch and a half every 20 years.说明身高增长的主要因素是"生活条件改善"。
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