四边形ABCD为菱形，E为BC边上的中点，P为对角线BD上一点，要使PE+PC最

男，48岁。右上腹疼痛半年，加重伴上腹部包块1个月。半年前无明显诱因出现右上腹钝痛，为持续性，有时向右肩背部放射。近1个月来，右上腹痛加重，自觉右上腹饱满，有包块，伴腹胀、食欲缺乏、恶心，无呕吐、腹泻，偶有发热（体温最高38．1℃）。患者发病来，大小便正常，体重下降约5公斤。既往有乙型肝炎病史15年，否认疫区接触史，无烟酒嗜好，无药物过敏史，家族史中无遗传性疾病及类似疾病史。查体：T36．7℃、P78次／分，R18次／分，Bp110／70mmHg，发育正常，营养一般，神清合作，全身皮肤无黄染，巩膜轻度黄染，双锁骨上窝未及肿大淋巴结，心肺（-）。腹平软，右上腹饱满，无腹壁静脉曲张，右上腹压痛，无肌紧张，肝脏肿大肋下5cm，边缘钝，质韧，有触痛，脾未及，腹叩鼓音，元移动性浊音，肝上界叩诊在第五肋间，肝区叩痛，肠鸣音8次／分，肛门指诊未及异常。

目前可明确诊断为（）

A.肝硬化

B.原发性肝癌

C.继发性肝癌

D.肝血管瘤

E.肝脓肿

F.肝囊肿

一方为防止另一方通过结婚来骗取自己的财产，可以采取( )措施。

A．婚后财产约定

B．婚前转移自己的财产

C．不结婚，保持非婚同居关系

D．婚后转移自己的财产

患者，女，61岁，慢性肾衰竭5年。现症见：头晕头痛，耳鸣眼花，两目干涩，口干咽燥，腰膝酸软，大便易干，尿少色黄，舌淡红少津，苔薄白，脉弦。血压160/92mmHg。治疗应首选的方剂是（）

A.六味地黄丸

B.金匮肾气丸

C.杞菊地黄汤

D.龙胆泻肝汤

E.全鹿丸

预防性使用抗菌药的目的是什么？

阅读理解。

      If English means endless new words,difficult grammar and sometimes strange pronunciation,

you are wrong.Haven't you noticed that you have become smarter since you started to learn a

language?

     According to a new study by a British university,learning a second language can lead to an

increase in your brain power.Researchers found that learning other languages changes grey

matter.This is the area of the brain which processes information.It is similar to the way that

exercise builds muscles.

     The study also found the effect is greater the younger people learn a second language.A

team led by Dr Andrea Mechelli,from University College London,took a group of Britons

who only spoke English.They were compared with a group of "early bilinguals" who had learnt

a second language before the age of five,as well as a number of later learners.

      Scans showed that grey matter density(密度)in the brain was greater in bilinguals than in

people without a second language.But the longer a person waited before mastering a new

language,the smaller the difference.

     "Our findings suggest that the structure of the brain is changed by the experience of learning

a second language," said the scientists.It means that the change itself increases the ability to learn.

      Professor Dylan Vaughan Jones of the University of Wales has researched the link between

bilingualism and math skill."Having two languages gives you two windows on the world and makes

the brain more flexible," he said."You are actually going beyond language and have a better

understanding of different ideas."

     The findings were matched in a study of native Italian speakers who had learned English as a

second language between the ages of 2 and 34.Reading,writing,and comprehension were all tested.

The results showed that the younger they started to learn,the better."Studying a language means you

get an entrance to another world," explained the scientists.

1.The main subject talked about in this passage is __________.

A.science on learning a second language

B.man's ability of learning a second language

C.language can help brain power

D.language learning and math study

2.In the second paragraph,the writer mentions "exercise" in order to _________.?

A.say language is also a kind of physical labor

B.prove that one needs more practice when he/she is learning a language

C.to show the importance of using the language when you learn the language

D.make people believe language learning helps grey matter work well

3.The underlined word "bilingual" probably means __________.

A.a researcher on language learning

B.a second language learner

C.a person who can speak two languages

D.an active language learner

4.We may know from the scientific findings that ___________.

A.the earlier you start to learn a second language the higher the grey matter density is

B.there is no difference between a later second language learner and one who doesn't know a second

language

C.the experience of learning a second language has bad effect on people's brain

D.the ability of learning a second language is changing all the time

5.In the last two paragraphs,the author wants to tell us that _________.

A.learning a second language is the same as studying math

B.early learning of a second language helps you a great deal in study other subjects

C.Italian is the best choice for you as a second language

D.you'd better choose the ages between 2 and 34 to learn a second language