下面引起高钾血症的病因中哪项是不正确的（） A.组织损伤 B.大量输入库血 C.急性

要表示某地区一年内月平均气温变化的情况，可以把月平均气温制成______统计图．想清楚地表示部分与总量之间的关系，要选用______统计图．

水从高处向低处流，但现代水利设施可以把水从低处引到高处，灌溉农田。在生物领域人们可以将一个生物的遗传物质转移到另一个生物体中，获得人类希望的遗传性状，创造出新物种。于是，有人说规律是可以创造的。

20世纪末，世界第一个社会主义国家苏联解体，社会主义遇到空前的挫折。对此，有人认为，社会主义的历史终结了，规律是可以改变的。

上述材料中观点主要违背了规律的什么特性？（4分）其含义怎样？（3分）它要求我们该怎样做事情呢？（5分）

Mother’s Day is usually celebrated on the second Sunday of May every year. Do you know that a mom deserves a special gift this year for Mother’s Day? Sure, flowers can always brighten Mother’s Day and a dinner out is always appreciated. However, doesn’t she deserve something more personal or something that lasts longer than an evening?

I’m talking about the gift of fitness. Improved fitness is a gift that is invaluable to everyone. When you give a woman the gift of fitness, you are helping her open her door to better health. I can’t think of a more thoughtful gift that shows the recipient （接受者）how much you care about their well-being. By giving the gift of fitness you are providing them with unlimited health benefits. Besides, it’s a gift that you can truly feel proud to give.

Of course, we all know that exercising can help people stay slim and fit. But, do you also know about all the other great benefits of exercising? Daily physical activities reduce stress and help you sleep better. Fitness has been linked to reducing the risk of some diseases and to warding off depression. Researchers also believe that strength training can help prevent osteoporosis （骨质疏松）. Not to mention that exercising also improves self-esteem, increases energy and helps you be able to do continuous work for longer.

All moms would find these benefits extremely great. If they are like most of us, they have probably even mentioned how they would like to drop a few pounds or just get in better shape. In fact, experts say that about 62% of Americans are currently on a diet. By giving the gift of fitness, you are helping provide your mom with extra motivation. She may be more motivated to actually get fit because she doesn’t want to feel guilty about ignoring such a thoughtful gift.

小题1: The first paragraph is likely to tell us that ________.

A．we should give a special gift to our mom for Mother’s Day

B．we should invite our mom to a dinner for Mother’s Day

C．it’s good to send flowers to moms for Mother’s Day

D．moms aren’t worth special gifts for Mother’s Day小题2: The underlined word “invaluable”（in paragraph 2） means ________.

A．priceless

B．worthless

C．useless

D．helpless小题3: According to this passage, the gift of fitness will ________.

A．make moms feel prouder

B．let moms free from illnesses

C．keep moms having a healthy diet

D．encourage moms to do more exercise小题4: Which of the following would be the best title for this passage?

A．Better Pay Attention to Your Mother’s Health

B．Give the Gift of Fitness This Mother’s Day

C．Moms Like to Accept the Gift of Fitness

D．Help Your Mother Keep a Good Shape

与环氧乙烷相比，亚乙基亚胺与胺的反应较容易进行，不需要添加催化剂反应就可以发生。

确保事务的原子性和持久性是I)BMS的事务管理器中______机制的责任。