防治尿酸性肾病包括（） A.保持碱性尿 B.24h持续静脉补液 C.鼓励患者多饮水

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项.

_____1____. The time and money that doctors spend on their medical education are probably one reason for this problem. A visit to a doctor’s office costs from fifteen to fifty dollars. It is impossible to pay for the medical care they need. _____2_____. Most doctors, however, disagree. They say that they were required to study medicine for a long time. Tuition（学费） for many years of medical education costs a lot of money. Doctors say that it is necessary for most medical students to borrow money from a bank to pay their tuition. _____3_____, young doctors need a lot of money for their work. _____4_____. Therefore it is possible that the high cost of medical care in American is unnecessary. Because high tuition is one cause of high costs, ____5_____.

It is possible for the poor people to see the doctor in America.

Many people in the United States think that doctors are overpaid

One way to lower costs would be to have medical schools that are free or have low tuition

They are not willing to pay high tuition for the doctors

The cost of medical care in the United States is very high

Because this money must be repaid to the bank

So, they charge people high prices for medical care

2007年１月10日铁道部指出，2007年铁路春运各类旅客列车票价一律不上浮，以后春运也将不再实行票价上浮制度。国家发展和改革委员会、交通部1月18日宣布，2007年春运期间公路旅客运输票价不再上浮。这样做的影响有（   ）                                   

①减轻了旅客负担，特别是农民工等低收入旅客负担   

②稳定市场秩序，维护消费者的合法权益  

③不利于铁路、公路等运输部门的发展  

④价格不再对生活产生影响

A．①②④

B．①②③

C．③④

D．①②

水泥混凝土路面工程的底基层可采用( )等。

A．级配粒料

B．水泥稳定粒料

C．石灰粉煤灰稳定粒料

D．水泥稳定细粒土

E．粗粒土

股票分割会对公司的资本结构和股东权益产生影响。( )

下图所示的调节过程是人体稳态的重要组成部分。其中，甲图中①②③分别代表下丘脑、垂体及甲状腺进行的生理活动过程，a、b、c分别代表图中所示的三种内分泌腺所分泌的激素。乙图表示垂体所分泌的TSH作用于甲状腺的示意图。请据图回答下列问题：

图中的胰岛可分泌胰岛素和胰高血糖素。若胰岛B细胞受损，人会得糖尿病，这主要是因为胰岛B细胞受损，（）分泌减少，促进组织细胞加速摄取、利用和储存葡萄糖的能力减弱，从而使血糖水平升高。