We often tend to associate smiling as the result of a positive event or mood. But research demonstrates that the act of smiling, in and 【C1】______ itself, can be the catalyst for joy. Wonderful things, ranging from an 【C2】______ mood to a better relationship, can be the result of the 【C3】______ act of smiling. Even better, it is a tool that is free, easy and always available. Even when you aren't feeling happy, smile can help【C4】______your mood. Darwin hypothesized, back in 1872, that making changes in our 【C5】______ expressions can influence our【C6】______experience, something he called facial feedback response theory. Psychological research has 【C7】______ Darwin' s assertion that expressions do not just result from moods, but actually influence them. Smiling more may actually【C8】______your lifespan. Research indicates that smiling may improve heart health by 【C9】______ heart rate after stressful events. So,【C10】______smiling to your health regime of eating well, getting enough sleep and exercising may just add【C11】______years to your life. People who smile more tend to be more 【C12】______, joyful and emotionally stable which lends itself to healthier relationships, and thus have longer and more successful【C13】______. An interesting study published in 2009 found a correlation between smiles in photographs and divorce rates. The larger the smile, the【C14】______likely divorce was later in life.【C15】______, those with the smallest smiles or no smiles, were five times more likely to be divorced. When Mother Teresa said "Every time you smile at someone, it is ... a【C16】______to that person, a beautiful thing", she was right. One study【C17】______by Hewlett Packard found that seeing another's smile stimulated the heart and【C18】______more so than eating chocolate or receiving money. This was particularly true【C19】______viewing the smile of a child. Additionally, research has demonstrated smiling may actually be easily diffused. Research published in the Scandinavian Journal of Psychology examined mimicry, the tendency to mimic the emotional expressions of those around us, and found that it is actually hard to【C20】______when someone else is smiling.

【正确答案】 B

【答案解析】解析：此处Wonderful things，ranging from an______mood to a better relationship，can be the result of…意为“美妙的事情，从______的心情到更好的情感，都是……的结果”。B．improved“好转的，改良的”符合题意，为正确答案。impressed“印象深刻的”，important“重要的”，imposed“强加的，施加的”，三项均不符合题意，故排除。

【正确答案】 B

【答案解析】解析：此处Even when you aren’t feeling happy,smile can help______your mood意为“哪怕在你并不开心的时候，微笑也有助于______情绪”。even一词往往引导的是转折句，所以空白处所在的后半句之意应该与when引导的前半句之意之间有转折关系，因此可推断此处想表达微笑可以在你不开心的时候改变你的情绪。shift mood“改变心情”符合题意，因此B．shift“改变”为正确答案。sack“解雇；把……装入袋；劫掠”，slip“滑动；滑倒”，switch“切换(音量)，调换”，三项均不符合题意，故排除。

【正确答案】 A

【答案解析】解析：此处Darwin hypothesized,back in 1872，that making changes in our______expressions can influence…，something he called facial feedback response theory意为“早在1872年，达尔文就提出面部反馈响应理论，假设______表情的改变也会使……发生转变”。根据填空处后面出现的facial feedback response theory，可推断出填空处想表达“面部表情”之意，因此A．facial为正确答案。

【正确答案】 D

【答案解析】解析：此处Psychological research has______Darwin’s assertion that expressions do not just result from moods，but actually influence them意为“心理学研究______达尔文的说法，表情不只是被心情决定，反过来也影响心情”。validate“证实，验证，确认”代入原文最为合理，因此D．validated为正确答案。formalize“使形式化；使正式”，declare“宣布，声明”，implement“实施，执行”，三项均不符合题意，故排除。

【正确答案】 B

【答案解析】解析：此处Research indicates that smiling may improve heart health by______heart rate after stressful events意为“研究表明微笑能改善心脏的健康状况，因为微笑能在重压下______心率”。根据常识推断，心跳加速不是健康的表现，因此accelerate“加速；促进”、facilitate“促进：帮助”和increase“增加，加大”三项均表达“加速，促进”之意，故排除。因此B．decreasing“减少，减小”为正确答案。

【正确答案】 B

【答案解析】解析：此处so，——smiling to your health regime of eating well，getting enough sleep and exercising may just add…to your life意为“在吃好睡好做运动的健康体制上______微笑，没准还能……”。add to意为“增加到，补充”，在这个并列句中，下半句中的add to是很好的提示，因此正确答案是B．adding。lead to“导致，通向”，contribute to“有助于；捐献”，resort to“求助于；诉诸；常去”，三项均不符合题意，故排除。

【正确答案】 D

【答案解析】解析：根据文意推断填空处想表达“多活几年”之意。四个选项的用法如下：little／a little用来修饰不可数名词，little“没有，几乎没有”表示否定意思，a little“有一点儿”表示肯定意思。few／a few用来修饰可数名词，few“没有，几乎没有”表示否定意义；a few“有几个”表示肯定意思。year是可数名词，因此正确答案是D．a few。

【正确答案】 A

【答案解析】解析：此处People who smile more tend to be more______，joyful and emotionally stable意为“爱笑的人更______、快乐，有着稳定的有利于健康的积极情绪”。根据原文，填空处应该填入一个词义积极向上的单词，因此A．optimistic“乐观的”符合题意，为正确答案。dispassionate“不带感情的，平心静气的”，severe“严厉的，苛刻的”，cautious“谨慎的，十分小心的”，三项均不符合题意，故排除。

【正确答案】 C

【答案解析】解析：此处People who smile more tend to be…and thus have longer and more successful______，意为“爱笑的人更易……，因而这些人的______通常更长久、更成功”。下文提到An interesting study published in 2009 found a correlation between smiles in photographs anddivorce rates career(2009年一项有趣的研究发现照片中的笑容和离婚率有相关性)，由此可以推断出C．marriage“婚姻”为正确答案。

【正确答案】 C

【答案解析】解析：此处______，those with the smallest smiles or no smiles，were five times more likely to be divorced意为“______，那些笑意浅淡或是根本不笑的，离婚的可能性增加了五成”。鉴于上文提到“笑得越多离婚越少”，可以推断填空处应填入一个表达对比的连接词。Conversely“相反地”表对比关系，根据文意，C．Conversely为正确答案。Consequently“因此”表因果关系，Moreover“而且；此外”表递进关系，Otherwise“另外的”表转折关系。

【正确答案】 D

【答案解析】解析：此处One study______by Hewlett Packard found that seeing another’s smile stimulated the heart and…意为“惠普公司______的一项研究表明看到别人微笑可以刺激心脏和……”。conduct study“进行研究”是惯用搭配，因此D．conducted“进行，实施”为正确答案。discover“发现，发觉”，convert“转变，变换”，prepare“准备”，三项均不符合题意，故排除。

【正确答案】 B

【答案解析】解析：此处One study…found that seeing another’s smile stimulated the heart and______more so than eating chocolate or receiving money意为“一项……研究发现，看见别人的微笑对心脏和______的刺激胜过吃巧克力或是收到钱”。根据文意，B．brain“大脑”为正确答案。stomach“胃口”较有迷惑性，但因该选项太过具体，不能包含后文提到的收到钱这项刺激，因此不选。mindset“心态”和desire“欲望”均不符合题意，故排除。

【正确答案】 C

【答案解析】解析：此处Research…examined mimicry…and found that it is actually hard to______when someone else is smiling意为“一项检测模仿行为的研究发现，当看到别人在笑的时候，人们是很难______”。根据文意，C．frown“皱眉，蹙额”为正确答案，即“看到别人微笑时很难皱眉”，暗指微笑可以减少负面情绪。sneer“嘲笑，冷笑”，blink“眨眼；使……闪烁”，breathe“呼吸，喘息”，三项均不符合题意，故排除。