You never see him, but they’re with you every time you fly. They record where you are going, how fast you’re traveling and whether everything on your airplane is functioning normally. Their ability to withstand almost any disaster makes them seem like something out of a comic book. They’re known as the black box.

　When planes fall from the sky, as a Yemeni airliner did on its way to Comoros Islands in the India ocean June 30, 2009, the black box is the best bet for identifying what went wrong. So when a French submarine (潜水艇) detected the device’s homing signal five days later, the discovery marked a huge step toward determining the cause of a tragedy in which 152 passengers were killed.

　In 1958, Australian scientist David Warren developed a flight-memory recorder that would track basic information like altitude and direction. That was the first mode for a black box, which became a requirement on all U.S. commercial flights by 1960. Early models often failed to withstand crashes, however, so in 1965 the device was completely redesigned and moved to the rear of the plane – the area least subject to impact – from its original position in the landing wells (起落架舱). The same year, the Federal Aviation Authority required that the boxes, which were never actually black, be painted orange or yellow to aid visibility.

　Modern airplanes have two black boxes: a voice recorder, which tracks pilots’ conversations, and a flight-data recorder, which monitors fuel levels, engine noises and other operating functions that help investigators reconstruct the aircraft’s final moments. Placed in an insulated (隔绝的) case and surrounded by a quarter-inch-thick panels of stainless steel, the boxes can withstand（抵挡）massive force and temperatures up to 2,000℉. When submerged（潜入水中）, they’re also able to emit signals from depths of 20,000 ft. Experts believe the boxes from Air France Flight 447, which crashed near Brazil on June 1,2009, are in water nearly that deep, but statistics say they’re still likely to turn up. In the approximately 20 deep-sea crashes over the past 30 years, only one plane’s black boxes were never recovered.

1.What does the author say about the black box?

2.. What information could be found from the black box on the Yemeni airliner?

3. Why was the black box redesigned in 1965?

4. What do we know about the black boxes from Air France Flight 447?

EAT YOUR VEGETABLES.　Wash your hands.　Always say "please"　and　"thank you　".We are full of advice for our children,　but when it comes to money,　we often have little to say.　As a result,　our children may grow up with clean hands and good manners,　but without any idea how to　manage their money.Here are some basics that will help guide them their entire lives：

Show them the future.　If your 13-year-old girl were to save $1.000,invest(投资)it at 8% and add $100 every month,　by the time she's 65,she would have $980,983!zxxk

Be careful of credit(信用).Credit cards can help you buy necessary things and build a credit history,　but they must be used responsibly,　which means paying off your debt in time.　Explain to your children that when you buy something using a credit card,　you can easily end up paying two or three times what you would have paid if you used cash.

Teach patience.　Suppose your child wants a new bicycle that costs $150.Rather than paying the cash,　give him some regular pocket money and explain that by putting aside,say,$15 each week,　he will be able to buy it for himself in only ten weeks.

Provide incentive.　Tell your children the importance of saving.　"For every dollar he or she agrees to save and invest rather than spend,　you agree to add another dollar to the pot,　"says Cathy Pareto,　expert in money planning.

Explain your values.　Values and money are deeply intertwined(缠结在一起),　says 　Eilleen 　Gallo,　co-author of The Financially Intelligent Parent.　When your child demands that you buy something,　explain why you really don't want to buy it.　"You might say, 'I'd rather save that money for your education,'"　advises Gallo.　Every time you spend or don't spend money,　you have a chance to share your values.

1.The writer gives some basics to help ____ in a proper way.

A．parents teach their children how to deal with money

B．children follow their parents　'instructions

C．children manage their money

D．parents save their money

2.The underlined word　"incentive"　in paragraph 6 means ____.

A．honor            B．praise            C．excitement        D．encouragement

3.What leads the writer to write this article?

A.　Parents want to know how to educate their children.

B.　He wants to share his good ideas about money matters.

C　.He thinks money management the most important for children.

D.　Parents care 　little 　about their children's management of money.