Leeway is the（）.

资料：American Airlines CEO takes blame for maintenance errors, disrupted flights
Friday, April 11,2008
By TERRY MAXON and DAVE MICHAELS/The Dallas Morning News
American Airlines chairman and chief executive officer Gerard Arpey said Thursday that he is taking “personal responsibility” for the bad maintenance that has forced the carrier to cancel some 3,000 flights this week for aircraft inspections.
MD-80s sat on the sidelines at Dallas/Fort Worth International Airport on Thursday, when American Airlines canceled more than 930 flights as inspections continued. The Fort Worth-based carrier has canceled 570 flights scheduled today.
“I run the company.” Mr.Arpey told reporters at an afternoon news conference.” so if there’s any blame to be had, it is my fault, and I take full responsibility for this.”
American canceled more than 930 flights Thursday as its mechanics, quality assurance inspectors and engineers worked to ensure that the carrier’s fleet of 300 MD-80 jets would meet Federal Aviation Administration（FAA） regulations.
The Fort Worth-based carrier canceled 570 flights for today as well, and expects the disruptions to continue into the weekend, although an airline spokesman said Saturday’s cancellations should be fewer than today’s.
On Tuesday, American grounded its fleet of aging MD-80s,which have an average age of more than 18 years and include some past their 25th birthday, to redo checks of the wiring harnesses in the right wheel well of the jets-only two weeks after it had performed the same inspections.
The FAA has said in recent days that its enforcement hasn’t changed or become stricter. But Senator Kay Bailey Hutchison said airlines have told her they’ve noticed difference.
“The standard is now being very, very rigidly enforced and leeway is being taken away.”Ms,Hutchison said.“I can’t say if it’s food or bad. But I know that it’s changed.”
Today, the U.S. has five to eight aviation fatalities per 100 million people who fly each year; during the mid-1990s,it was about 45 deaths per 100 million people flown.

What situation is being reported in the passage?

A.American Airlines is trying to meet the FAA regulations.
B.American Airlines is canceling 570 flights today.
C.American Airlines is blaming its CEO Gerard Arpey.
D.American Airlines is making internal inspections.

Leeway间隙是指

A.萌出后不久的恒切牙间隙
B.乳牙后期的散在间隙
C.乳磨牙早失后出现的间隙
D.乳磨牙替换成恒双尖牙后的余留间隙
E.以上均不正确

The non-compete clause has been causing trouble for over 600 years.In 1414 an English court heard the case of John Dyer,an apprentice whose master had stopped him from plying his trade for six months.The judge was having none of it."The contract is contrary to common law,"he ruled.Individuals should be free to pursue the livelihood of their choice.That principle has been diluted in the intervening centuries-most countries give businesses some leeway to use non-compete clauses,whereby workers promise not to start or join firms that go head-to-head with their ex-employer.But their prevalence in America is striking Defenders of these agreements put forward several arguments.One is that non-competes encourage innovation by stopping rivals waltzing off with trade secrets;there is some evidence that levels of investnent are higher at firms where they are used.Another argument is that firms are less likely to train workers if newly skilled employees are able to up sticks and take what they have learned with them to arival.Again,research backs up this claim.a third argument is that firms and employees should be free to contract as they wish he counter-arguments are stronger.The prevalence of non-compete agreements is clear evidence that they are being used indiscriminately.roughly 15 of american employees without a college degree,and a similar share of those earning less than$40,000 a year,are bound by them.Burger-flippers and care-home workers do not have trade secrets to hawk.unp pigr The gains in investment and training must be set against the wider costs.In one study,in Michi-gan,researchers found that workers'job mobility fell by 8%when non-competes were allowed.When people cannot work for another employer who would value their skills,wage growth suffers,too,because people typically achieve the biggest bumps in their salary when they move firm.Non-competes are also associated with a decline in enterprise.One study found that the rate of entry of new firms into knowledge-intensive industries fell by 18 when non-compete clauses could more easily be enforced The costs spill over to all workers-even those who are not subject to non-competes.Young firms are disproportionately important for job growth,for example;if fewer firms are formed,it will affect everyone in the labour market.And non-competes can have a chilling effect even in places that do not Recognise them The drawbacks of non-compete clauses are all the more worrying because of today's business climate.The incentive to invest and train counts for less when,as now,the American economy suffers from a lack of competition.Non-competes are also more worrying when the balance of power between companies and employees are already skewed.The spread of mandatory-arbitration clauses in employment contracts and the decline of trade unions are both signs of that imbalance
Why do some people support the agreements of non-compete clause?

A.Because it can facilitate the cooperation between companies
B.Because it can prevent competitors from stealing trade secrets
C.Because it will help the employees gain more workfare
D.Because it will help build great work relationships

The non-compete clause has been causing trouble for over 600 years.In 1414 an English court heard the case of John Dyer,an apprentice whose master had stopped him from plying his trade for six months.The judge was having none of it."The contract is contrary to common law,"he ruled.Individuals should be free to pursue the livelihood of their choice.That principle has been diluted in the intervening centuries-most countries give businesses some leeway to use non-compete clauses,whereby workers promise not to start or join firms that go head-to-head with their ex-employer.But their prevalence in America is striking Defenders of these agreements put forward several arguments.One is that non-competes encourage innovation by stopping rivals waltzing off with trade secrets;there is some evidence that levels of investnent are higher at firms where they are used.Another argument is that firms are less likely to train workers if newly skilled employees are able to up sticks and take what they have learned with them to arival.Again,research backs up this claim.a third argument is that firms and employees should be free to contract as they wish he counter-arguments are stronger.The prevalence of non-compete agreements is clear evidence that they are being used indiscriminately.roughly 15 of american employees without a college degree,and a similar share of those earning less than$40,000 a year,are bound by them.Burger-flippers and care-home workers do not have trade secrets to hawk.unp pigr The gains in investment and training must be set against the wider costs.In one study,in Michi-gan,researchers found that workers'job mobility fell by 8%when non-competes were allowed.When people cannot work for another employer who would value their skills,wage growth suffers,too,because people typically achieve the biggest bumps in their salary when they move firm.Non-competes are also associated with a decline in enterprise.One study found that the rate of entry of new firms into knowledge-intensive industries fell by 18 when non-compete clauses could more easily be enforced The costs spill over to all workers-even those who are not subject to non-competes.Young firms are disproportionately important for job growth,for example;if fewer firms are formed,it will affect everyone in the labour market.And non-competes can have a chilling effect even in places that do not Recognise them The drawbacks of non-compete clauses are all the more worrying because of today's business climate.The incentive to invest and train counts for less when,as now,the American economy suffers from a lack of competition.Non-competes are also more worrying when the balance of power between companies and employees are already skewed.The spread of mandatory-arbitration clauses in employment contracts and the decline of trade unions are both signs of that imbalance
The expression"spill over to"（Line 1,Para.6）is closest in meaning to

A.relate to
B.belong to
C.are owned b
D.are paid by