Ⅲ.克漏字
A. What is it that drives some people to take a risk while others would do otherwise? Scientistsbelieve that some biological factors are involved. An important chemical in the brain calleddopamine is __26__ risk-taking. It motivates us to seek out and learn new things and helps usprocess emotions, like anxiety and fear. People __27__ brains do not produce enough dopamineoften __28__ motivation and interest in life. When we accomplish a task, dopamine produces afeeling of satisfaction； it makes us feel good. The riskier the task, the more dopamine we produce,and the better we feel. __29__ , our brains have one way to protect us from taking too many risks.Small molecules called autoreceptors control dopamine use in the brain. A person with moreautoreceptors tends to be more careful, __30__ there is less dopamine moving around his or herbrain.
【題組】26.
(A) focused on
(B) resulting in
(C) paid off
(D) related to