适合于药物过敏试验的给药途径是A．静脉滴注 B．肌内注射 C．皮内注射 D．皮下注射

2010年3月11日，《福布斯》杂志推出了全球十大富豪排行榜，墨西哥电信巨头卡洛斯·斯利姆·赫鲁以     535亿美元的财富总额成为今年的全球首富。人们习惯用货币来衡量一个人拥有财富的多少，货币成为社会财富的象征，这是因为[ ]

A、货币的本质是一般等价物

B、货币是由国家发行并强制使用

C、货币体积小、价值大、便于携带

D、货币的价值能够通过其他商品体现出来

请从天然气、煤气、活性炭、碳酸钾、氧气、氮气六种物质中，按要求用化学式填空．

①能用来作净水剂的物质是______；

②空气中含量最多的气体是______；

③焰色反应火焰呈紫色的是______；

④生活中用来作燃料，且属于有机物的是______．

阅读理解。

     Can dogs and cats live in perfect harmony in the same home? People who are thinking about adopting

a dog as a friend for their cats are worried that they will fight. A recent research has found a new recipe

of success. According to the study, if the cat is adopted before the dog, and if they are introduced when

still young (less than 6 months for cats, a year for dogs), it is highly probable that the two pets will get

along swimmingly. Two-thirds of the homes interviewed reported a positive relationship between their cat

and dog.

     However, it wasn't all sweetness and light. There was a reported coldness between the cat and dog in

25% of the homes, while aggression and fighting were observed in 10% of the homes. One reason for this

is probably that some of their body signals were just opposite. For example, when a cat turns its head

away it signals aggression, while a dog doing the same signals submission (恭维).

     In homes with cats and dogs living peacefully, researchers observed a surprising behavior. They are

learning how to talk each other's language. It is a surprise that cats can learn how to talk 'dog', and dogs

can learn how to talk 'cat'.

     What's interesting is that both cats and dogs have appeared to develop their intelligence. They can

learn to read each other's body signals, suggesting that the two may have more in common than we

preciously suspected. Once familiar with each other's presence and body language, cats and dogs can

play together, greet each other nose to nose, and enjoy sleeping together in the sofa. They can easily

share the same water bowl and in some cases groom (梳理) each other.

     The significance of this research on cats and dogs may go beyond pets-to people who don't get along,

including neighbors, colleagues at work, and even world superpowers. If cats and dogs can learn to get

along, surely people have a good chance.

1. The underlined word swimmingly in Paragraph 1 is closest in meaning to______.

A. early      

B. sweetly      

C. quickly      

D. smoothly

2. Some cats and dogs may fight when_________.

A. they are cold to each other      

B. they look away from each other

C. they misunderstand each other's signals

D. they are introduced at an early age

3. It is suggested in paragraph 4 that cats and dogs_______.

A. have common interests        

B. are less different than we thought

C. have a common body language

D. are less intelligent than we expected

4. What can we human beings learn from cats and dogs?

A. We should learn to live in harmony

B. We should knows more about animals

C. We should live in peace with animals

D. We should learn more body languages

某同学用10mol·L^—1的浓盐酸配制250mL 1 mol·L^—1的稀盐酸，并进行有关实验。请回答下列问题：

(1)需要量取浓盐酸                    mL。（2分）

(2)配制该稀盐酸时使用的仪器除量筒、烧杯、玻璃棒外，还必须用到的仪器有

                                     等。（2分）

(3)取所配制的稀盐酸100mL与一定质量的锌充分反应，锌全部溶解后，生成的气体在标准状况下的体积为0.896L，则参加反应的锌的质量为多少克？（写出计算过程）（3分）

(4)设反应后溶液的体积仍为100mL，则反应后溶液中H⁺物质的量浓度是多少？（写出计算过程）（3分）

2005年初，黄小姐准备投资房地产，很快即相中了某房产公司开发的、座落于某市某区环城路的一套建筑面积约150平方米的商品房，尽管房产公司开出每平方米7000元的高价，但黄小姐仍爽快答应了，双方签订了一份认购书，黄小姐并当即支付了20万元，但关于该20万元款的性质认购书中只字未提。随着正式签约日期的临近，当初预订的房屋已升值了近30万元。可到了正式签约日期，房产公司却突然告知黄小姐，因其未按通知要求及时签约，故已将房屋出让给他人(且已办理预售登记)，返还已交款20万元。该受让人为甲。 黄小姐听到这个消息后，即刻赶到房产公司查验该份通知，当即指出该通知上的签名根本不是其本人所写，双方因此发生争执。事后，经人指点，黄小姐给房产公司打了个电话，要求房产公司明确其所付款项的性质，电话里的房产公司工作人员表示其所付的款项为ding(音)金。黄小姐这次作了准备，将上述通知内容进行了录音。 带着这盘录音磁带，黄小姐走进法院，要求房产公司双倍返还购房定金共40万元。在庭审中，房产公司表示，电话中当事人口头所述的应该是"订金"而不是"定金"。同时，房产公司又拿出前述那份通知，指出违约的是黄小姐，是黄小姐没有按通知要求及时前来签约，故不同意黄小姐双倍返还已付款项的请求。应黄小姐申请，法院委托司法部司法鉴定中心对通知上黄小姐的签名进行鉴定，该中心出具了不是黄小姐所写的鉴定结论。至此，房产公司承认自己受高额利润诱惑，将房屋又高价出让给他人的事实，但还是不同意黄小姐关于已付款项适用定金罚则的要求。本案中关于定金的争议，以下说法正确的是：

A．因为双方没有以书面形式约定定金条款，所以法院不应支持原告的主张

B．因为双方没有约定定金性质，所以法院不应支持原告的主张

C．虽然双方没有以书面形式约定定金条款，但是一方已经实际履行义务，且对方已接受，所以应当认定定金关系已存在

D．以上说法都不对