三、完形填空(共15小题，每小题2分，共30分)
通读下面的短文，掌握其大意。然后从每小题的四个选项中选出可填入相应空白处的最佳选项。
Scientists have been struggling to find out the reason behind blushing (脸红). Why would
humans evolve(进化) a 21__________ that puts us at a social disadvantage by 22___________ us to reveal that we have cheated or lied?
Charles Darwin pointed out that 23__________ all people of all races blush，animals do not. When it came to explaining the reason, he was 24 __________ a loss. That has not stopped others from trying.
One 25__________ is that blushing started out as a way to show we obey authoritative members of the group. Later, as our social interactions became 26__________ complex, it became involved with higher, self-conscious 27__________ such as guilt, shame and embarrassment. This would seem to put individuals at a disadvantage，but blushing might actually make a person more 28 __________ or socially desirable.
29__________ that women blush more than men，one university researcher suggests that blushing might have evolved as a way for women to 30__________ their honesty to men so as to win their support in raising children. Some zoologists also think blushing could have emerged as a way to foster trust. " If you were to go hunting 31__________ a stone-faced partner，you could never 32__________ what he wants. “he says.
Once blushing became 33 __________ with embarrassment, anyone who did not blush might have been at a disadvantage because we are 34 __________ likely to trust someone who appears never to feel 35 __________about anything.
第21题单选 填入(21)处的最佳答案是()。
A. response
B. reply
C. reflection
D. recall
答案：A
解析：文章主题是人类为什么会脸红。response意为“反应”;reply意为“回复”;reflection意为“反射，倒影”;recall意为“回忆”。根据文章主题，脸红是一种反应。
第22题单选 填入(22)处的最佳答案是()。ding
B. forcing
C. encouraging
D. preventing
答案：B
解析：forbid意为“禁止”;force意为“迫使”;encourage意为“鼓励”;prevent意为“阻止”。根据原文，脸红会暴露自己在说谎。
第23题单选 填入(23)处的最佳答案是()。
A. when
B. while
C. since
D. because
答案：B
解析：这里引用达尔文所说的话。when和while都表示“当……时候”的意思，但while 有“与……相反”的意思，翻译成“然而，却”。since和because表示原因。根据上下文，这里是说人类与动物不一样，人类会脸红，而动物却不脸红。应选择表示相反的词。
第24题单选 填入(24)处的最佳答案是()。
A. on
B. in
C. at
D. of
答案：C
解析：at a loss是固定词组，表示茫然。这部分是说，达尔文指出人类会脸红而动物不会的时候也是茫然的，说不出其原因。
第25题单选 填入(25)处的最佳答案是()。
A. suggestion
B. advice
C. solution
D. question
答案：A
解析：suggestion意为“建议”;advice意为“劝告”;solution意为“解决”;question意为“问题”。达尔文解不开的谜，更多的人想试一试。所谓“试(trying)”就是不肯定。
第26题单选 填入(26)处的最佳答案是()。
A. apparently
B. completely
C. awkwardly
D. increasingly
答案：D
解析：apparently意为“明显地”;completely意为“完全地”;awkwardly意为“危险地，不舒服地”;increasingly意为“日益地”。根据原文，社会在发展，社会交往肯定也是日益复杂。
第27题单选 填入(27)处的最佳答案是()。
A. moods
B. senses
C. emotions
D. tempers
答案：C
解析：mood意为“情绪、心情”;sense意为“感官”;emotion意为“情感”;temper意为“脾气”。原文列举了如guilt(愧疚)、shame(羞愧)、embarrassment(尴尬)等感觉。这些显然不属于sense(感官)和temper(脾气)，排除。mood和emotion的区别在于，mood表示就某种事件或某段时间影响下所产生的心情或情绪，emotion表示主观上的下意识的感觉。原文在分析人类脸红的原因，从人类自身的情感着手。所以，这里应是emotion。
第28题单选 填入(28)处的最佳答案是()。
A. privileged
B. embarrassed
C. energetic
D. attractive
答案：D
解析：privileged意为“享有特权的”;embarrassment意为“尴尬”;energetic意为“充 满活力的”;attractive意为“有吸引力的”。根据原文空格后的“or socially desirable(社交上更合适)”判断，attractive(有吸引力的)最恰当：人类的脸红可能使 人更具有吸引力或者说社交上更合适。
第29题单选 填入(29)处的最佳答案是()。
A. Noting
B. Providing
C. Assuming
D. Hoping
答案：A
解析：note意为“注意”;provide意为“提供”;assume意为“假设”;hope意为“希望”。根据原文，注意到女性较男性更容易脸红……
第30题单选 填入(30)处的最佳答案是()。
A. assure
B. approve
C. confirm
D. demonstrate
答案：D
解析：assure意为“确信”;approve意为“批准”;confirm意为“确认”;demonstrate意为“显示，证明”。根据原文，女性的脸红是向男性表示诚实的一种方式。
2017成考试题：2017年成人高考专升本英语考试备考试题及答案
2017成考报名：2017年成人高考报名时间/入口
