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外语
The writer’s general attitude towards Freudian theory about risk-taking behavior is ______. According to the scientists’ discov
The writer’s general attitude towards Freudian theory about risk-taking behavior is ______. According to the scientists’ discov
admin
2009-06-24
25
问题
The writer’s general attitude towards Freudian theory about risk-taking behavior is ______.
According to the scientists’ discovery, how do genes work?
选项
A、They facilitate absorption by nerve cells of dopamine.
B、They direct the combination of more chemicals.
C、They stimulate dopamine production.
D、They control the flow of certain chemicals in the brain.
答案
B
解析
细节题。答案信息对应于文章倒数第三句的直接引语:Genes are simply chemicals that direct the combination of more chemicals,即基因只是促使更多化学物质结合起来的化学物质。
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