问题 选择题

铝合金因具有坚固、轻巧、美观、易于加工等优点而成为多数现代家庭封闭阳台时的首选材料。这与铝合金的下列物理性质无关的是 (  )

A.较小的密度

B.较大的硬度

C.良好的导电性

D.较好的延展性

答案

答案:C

题目分析:A、较巧是指它的密度小;

B、坚固是指它的硬度大;

C、良好的导电性显然不是一个家庭阳台需要具备的;

D、易于加工是指它具有较好的延展性.

故选C.

点评:我们既要了解物质的密度、硬度、导电性、延展性等基本物理性质,还要了解它们在实际生活应用中所带来的不同效果.

阅读理解

Wealth starts with a goal saving a dollar at a time. Call it the piggy bank strategy(策略). There are lessons in that time-honored coin-saving container.

Any huge task seems easier when reduced to baby steps. I f you wished to climb a 12,000-foot mountain, and could do it a day at a time, you would only have to climb 33 feet daily to reach the top in a year. If you want to take a really nice trip in 10 years for a special occasion, to collect the $15,000 cost, you have to save $3.93 a day. If you drop that into a piggy bank and then once a year put $1,434 in a savings account at 1% interest rate after-tax, you will have your trip money.

When I was a child, my parents gave me a piggy bank to teach me that, if I wanted something, I should save money to buy it. We associate piggy banks with children, but in many countries, the little containers are also popular with adults. Europeans see a piggy bank as a sign of good fortune and wealth. Around the world, many believe a gift of a piggy bank on New Year’s Day brings good luck and financial success. Ah, but you have to put something in it.

Why is a pig used as a symbol of saving? Why not an elephant bank, which is bigger and holds more coins? In the Middle Ages, before modern banking and credit instruments, people saved money at home, a few coins at a time dropped into a jar or dish. Potters(制陶工) made these inexpensive containers from an orange-colored clay(黏土) called “pygg,” and folks saved coins in pygg jars.The Middle English word

for pig was “pigge”. While the Saxons pronounced pygg, referring to the clay, as “pug”, eventually the two words changed into the same pronunciation, sounding the “i” as in pig or piggy. As the word became less associated with the orange clay and more with the animal, a clever potter fashioned a pygg jar in the shape of a pig, delighting children and adults. The piggy bank was born.

Originally you had to break the bank to get to the money, bringing in a sense of seriousness into savings. While piggy banks teach children the wisdom of saving, adults often need to relearn childhood lessons. Think about the things in life that require large amounts of money--- college education, weddings, cars, medical care, starting a business, buying a home, and fun stuff like great trips. So when you have money, take off the top 10%, put it aside, save and invest wisely. 

小题1:What is the piggy bank strategy?

A.Paying 1% income tax at a time.

B.Setting a goal before making a travel plan.

C.Aiming high even when doing small things.

D.Putting aside a little money regularly for future use.小题2:Why did the writer’s parents give him a piggy bank as a gift?

A.To delight him with the latest fashion.

B.To encourage him to climb mountains.

C.To help him form the habit of saving.

D.To teach him English pronunciation.小题3:What does then underlined word “something”(Paragraph 3) most probably refer to?

A.Money

B.Gifts

C.Financial success

D.Good luck小题4:The piggy ban originally was _________.

A.a potter’s instrument

B.a cheap clay container

C.an animal-shaped dish

D.a pig-like toy for children小题5:The last paragraph talks about ________.

A.the seriousness of educating children

B.the enjoyment of taking a great trip

C.the importance of managing money

D.the difficulty of starting a business