A．You should be successful if you spend all your time by yourself.

　　B．You should exercise more if you want to keep your minds healthy.

　　C．You will not become successful if you join in more social intercourse.

　　D．You will be more successful if you can make your lonely time meaningful.

　　4．Which may be the best title for this passage?

　　A．Live on Your Own

　　B．Happiness and Loneliness

　　C．The Secret of Success

　　D．Practice Your Social Ability

　　【解题导语】本文主要讨论了孤独和幸福之间的关系。

　　【难句分析】Einstein said："It is not your working time but your spare time that determines the possibility of whether you will be successful or not."

　　分析：本句是一个复合句。It is...that...是强调句型，对your spare time进行强调；whether引导宾语从句。

　　译文：爱因斯坦说："不是你的工作时间，而是你的业余时间决定了你是否能够成功。"

　　1．C　考查词义猜测。根据第一段第一句"Nowadays, especially in China，everything seems to favor social intercourse，such as gatherings of friends，KTV，group travel，dining together，playing cards and mahjong，plus the Chinese­style'street­crossing group'"及画线词所在句可推知，中国人喜欢社交，即使回到家也会继续忙着在朋友圈里讨论，故选C。

　　2．C　考查推理判断。根据第二段第二句中的"My loneliness increases as the scene becomes much busier"和第三句可推知，人们有可能在热闹的人群中反而更加孤独，故选C。A项错在孤独会让人抑郁，第二段并没有提到；B项错在社交活动能够提高我们的幸福感，这与文章中清华大学教授说的话不符；D项错在我们应该参加社交活动以减少我们的孤独，这与第二段第一句"However, these scenes cannot always ease a sense of loneliness"相悖，故排除。

　　3．D　考查推理判断。根据第四段"Lonely life could be either dull, boring and tasteless or abundant，interesting and colorful，depending on one's quality, ambition and inspiration"并结合爱因斯坦所说的话可推知，充分利用孤独的时间，不断提高自我，这样成功的几率会更大，故选D。A项错在如果你把所有时间用来独处，你会成功，这与第三段最后一句"The'spare time'he referred to could be taken as'spending time by yourself'"不符；B项错在如果你想思想健康就要多锻炼，文章并没有提到；C项错在如果你参加更多的社交活动，你就不会成功，文章中没有提到，故排除。

4．B　考查标题判断。根据最后一段"Man，in fact，needs loneliness more than happy time，and only abundant loneliness can produce quality happiness"并结合全文的整体内容可推知，