18．There is an old Chinese proverb that states"One Generation plants the trees； another gets the shade，"and this is how it should be with mothers and daughters．The relationship between a mother and daughter is sometimes confusing．If close，the relationship can be similar to friendship．However，the mother and daughter relationship has unique characteristics that distinguish it from a friendship．These characteristics include a hierarchy （等级） of responsibility and unconditional love，which preclude mothers and daughters from being best friends．
Marina，27 years old，says，"I love spending time with my mom，but I wouldn't consider her my best friend．Best friends don't pay for your wedding．Best friends don't remind you how they carried you in their body and gave you life!Best friends don't tell you how wise they are because they have been alive at least 20 years longer than you．"This doesn't mean that the mother and daughter relationship can't be very close and satisfying．
While some adult relationships are still troubled，many find them to be extremely rewarding．This generation of mothers and adult daughters has a lot in common which increases the likelihood of shared companionship．Mothers and daughters have always shared the common experience of being homemakers，responsible for maintaining and passing on family values and traditions．Today contemporary mothers and daughters also share the experience of the workforce and technology，which may bring them even closer together．
Best friends may or may not continue to be best friends，but for better or worse，the mother and daughter relationship is permanent，even if for some unfortunate reason they aren't speaking．The mother and child relationship is closer than any other．There is not an equal relationship．Daughters should not feel responsible for their mother's emotional well-being．It isn't that they don't care deeply about their mothers．It's just that they shouldn't be burdened with their mother's well being．
The mother and daughter relationship is a relationship that is not replaceable by any other．Mothers never stop being mothers，which includes frequently wanting to protect their daughters and often feeling responsible for their happiness．Mother always"trumps"friend．
36．The underlined word"preclude"in Paragraph 1 probably means"B"．
A．differ B．prevent C．benefit D．change
37．Why do many mothers and adult daughters keep a rewarding relationship？A
A．Because they have a lot in common．
B．Because they have common family values．
C．Because they have no generation gap．
D．Because they keep a constant relationship．
38．What do we know from the passage？C
A．The mother and daughter relationship can be replaced by a best friend．
B．A mother's love brings her and her daughter a close friendship．
C．The mother and daughter relationship goes beyond best friends'friendship．
D．Marina has a troubled relationship with her mother．
39．The author proves his statements mainly byB．
A．listing data B．giving explanations C．quoting sayings D．making examples
40．What is the best title for the passage？D
A．How to be a good mother and daughter
B．Who is a mother's best friend？
C．A friend in need is a friend indeed．
D．Can a mother be a daughter's best friend？
分析 本文论述了母女关系，认为母女关系独具特点，不同于友谊，母亲与女儿不可能成为最好的朋友．作者认为，母女之间有许多共同之处，母女关系永存、不可替代．而友谊是双向的，但是母亲永远希望保护女儿、为女儿负责，女儿却不必为母亲的幸福承担责任．
解答 36．B 词义猜测题．根据第二段"Best friends don't pay for your wedding…Bestfriends don't tell you how wise they are…"可推断，这里指母女之间不能成为最好的朋友，preclude意为"阻止"，preclude后面的from提示其含义应为prevent．故答案为B．
37．A 细节理解题．根据第三段…many find them to be extremely rewarding．Thisgeneration of mothers and adult daughters has a lot in common which increasesthe likelihood of shared companionship．说明母女之间的共同之处有助于增强相互关系的可能性，因而这是一种rewarding adult relationship．故答案为A．
38．C 主旨大意题．纵观全文可知，本文论证的是母女关系不同于朋友关系但超越朋友关系．A，B两项与文章主旨不符，D项与第二段I lovespending time with my mom 一句不符．故C项正确．
39．B 写作方法题．问的是"论证方法"．本文采用的是"说理"的方法．故B项正确．A项"列数据"；C项"引名言"；D项"举实例"．
40．D 主旨大意题．本文对比了母女之间的友谊和好朋友之间的友谊，认为母女不可能像最好的朋友，D项最能体现文章的主题，故答案为D．
点评 本文是科教类阅读，主要考查细节理解题和推理判断题．在做细节理解题时，首先根据题目要求迅速在文章里找出相应的段落、句子或短语．认真比较选项和文中细节的区别，在做推理判断题时不要以个人的主观想象代替文章的事实，要根据文章事实进行合乎逻辑的推理判断．
