补出下列名句名篇中的空缺： 1、二十四桥仍在，，。念桥边红药，！（姜夔《扬州慢》

肾病患者需要食用低钠盐的食品，目前市场供应的低钠盐多为苹果酸钠盐 (C₄H₅O₅Na)。下列有关高氯精的说法不正确的是

A．苹果酸钠由4种元素组成    

B．苹果酸钠中C、H、O、Na的原子个数比为4∶5∶5∶1

C．苹果酸钠中C、H两种元素的质量比为48∶5 

D．苹果酸钠中氧元素的质量分数为33.3％

某袋装水泥原价为350元/t，供销部门手续费费率为4%，运杂费18元/t，二次运输费5元/t，运输损耗率为1%，采购保管费率为2%，则每吨水泥采购保管费为( )元。

A．7.71

B．7.43

C．7.36

D．7.00

女性，63岁。间断双膝关节疼痛5年，伴活动时弹响，初始时上下楼明显，逐渐加重，现走平路也出现关节疼痛。近1年来出现双手指关节疼痛，间断发作。查体，双手远端指间关节骨性肥大，左膝关节肿胀，浮髌试验阳性，右膝可及骨擦感。实验室检查示ESR35mm/h。

为明确诊断，首选的检查是（）

A.血常规

B.膝关节B超

C.CRP

D.RF

E.双手、双膝X线

F.抗核抗体

G.膝关节穿刺抽液

巴塞尔协议将银行资本分为核心资本和附属资本，其中，属于核心资本的有( )。

A．资产重估储备

B．普通准备金

C．实收股本

D．呆账准备金

E．公开储备

阅读理解。

     We each have a unique genetic (基因的,遗传的) make-up. Every cell of your body has the same set

of about 100,000 separate genes made of DNA. These are the instructions for producing a person.

Genes decide everything from the colour of your skin to the way your brain works. You have one of

several billion combinations of DNA which come from the random mixing of your parents' genes. Except

for identical twins (同卵双胞胎), no one has the same combination as another person. You are unique!

You are unique in another way too: in the way you are raised and all the experiences you have from before birth to adult life.These experiences influence you, your behaviour and attitudes, and the choices you make.

     But are genes or life experiences more important in shaping your appearance and personality? Scientists are studying twins to find out. One set of twins occurs every 70 births---some are identical and others are non-identical twins. Identical twins are special because they share exactly the same genes and often the same environment. Non-identical twins are more like ordinary brothers and sisters.

     Some identical twins have been adopted and brought up in different homes. With identical genes but a

different home environment, scientists can study twins to see how much a particular feature depends on the genes we inherit. For example, we know that eye problems, like short-sightedness, are mostly genetic. But resistance to pain is largely dependent on experiences. Genes also influence our eating habits. Identical twins brought up apart often like to eat at the same time of day and feel full after eating the same amount.

Non-identical twins in similar circumstances have more varied eating habits. Identical twins are also more

likely to follow the same patterns for marriage and divorce than non-identical twins.

     Scientists are trying to identify the different genes that influence our behaviour. Some people are

thrill-seekers and get into risk-taking and adventurous activities. They take up extreme sports like bungee

jumping and possibly take drugs. Scientists have discovered a gene which affects this.

     We could ask, "Are our lives determined by our genes or our upbringing?" Scientists are learning more all the time, but it is certainly true that both are important in making us who we are.

1. What is the main idea of the first paragraph?

A. We cannot easily change our physical appearance.

B. How we turn out depends on our parents' genes.

C. Everyone has a physical double somewhere in the world.

D. Both our genes and our experiences make us who we are.

2. Why are scientists studying twins?

A. To find out how many twins are born every year.

B. To discover what shapes us as individuals.

C. To compare differences between twins.

D. To study brother-and-sister relationships.

3. According to the passage, __________.

A. one in 70 twins are genetically identical 

B. non-identical twins are usually not of the same sex

C. twins separated at birth behave exactly the same

D. identical twins are genetically the same

4. Which of the following is most affected by experience according the passage?

A. Eating habits.

B. Eye-sight.  

C. Pain resistance.

D. Marriage patterns.

5. What does the underlined "this" in Paragraph 4 refer to?

A. Our love of sport.            

B. Our attitude to risk-taking.

C. Our skill at bungee jumping.    

D. Our ability to take drugs.