但是乐观不一定总是好事。该项研究的发起人指出，2008年的金融危机的罪魁祸首可能是资产分析师。他们过高估计资产，尽管当时已经有证据表明他们是错的。乐观还有可能威胁个人健康。首席研究员塔利夏洛特博士说：lsquo吸烟有害健康rsquo的警告根本起不到作用，因为人们认为自己得癌症的几率很低。人们的大脑本能
3
f地偏爱好的事情。但是，俗话说，祸兮福所倚。就算我们处世积极，我们也不用担心到夜不能寐。让我们昂首挺胸，保持微笑吧参考答案：【小题23】C【小题24】A【小题25】C习题解析：【小题23】短文在开头就提到accordi
gtoresearchersatU
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aturallyhopefulcreatures由此可知，满怀希望是人类的天性，也就是说，人类的天性还是很乐观的。因此答案为选项C。【小题24】短文中首先提到Butit39s
otalwaysgoodtobeoptimistic接着以the2008fi
a
cialcrisis为例进行说明，由此可知，乐观也有它的负面影响。因此答案为选项A。【小题25】短文最后一句Let39sjustkeepourchi
supa
dkeepsmili
g由此可知，作者还是认为人们应该保持乐观积极的态度。因此答案为选项C。大学英语四级听力2Questio
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