第一宇宙速度是___ The First Cosmic Velocity is ____

Everyone knows that the first rule of driving is never taking your eyes off the road. Teen drivers【C1】______being careful, but they tend to start multitasking after just a few months behind the wheel, according to research published Tuesday. And【C2】______older drivers can handle eating or talking to passengers, which【C3】______up the new drivers, dialing a cell phone increased the risk of accidents among young and【C4】______drivers alike. This isnt great news, since its well【C5】______that distracted driving is a leading cause of accidents among all drivers. It makes sense that young drivers will start testing their limits after a few months behind the wheel, according to Bruce Simons-Morton, a behavioral scientist. "You increase the difficulty of a task until you make an【C6】______," Simons-Morton says. "It seems like a very natural thing but still its very【C7】______, because good driving ability and safety judgment develops【C8】______a very long period of time." Within six months of getting their licenses, young drivers in this study -started texting, eating and【C9】______the radio while driving as much as their more skilled【C10】______But it takes thousands of hours of【C11】______to get good at driving, according to Simons-Morton. That disconnect may help【C12】______the high accident rates among teenage drivers. The researchers compared data from two small studies—one tracked 42【C13】______licensed young drivers and the other looked at 100 drivers with more experience . All the participants had sensors and cameras【C14】______in their cars. The researchers used the sensors to track when drivers got into accidents or close calls. The videos were then used to see what the drivers were doing just before the accidents【C15】______. Because the researchers wanted to focus on the【C16】______of distracted driving, they【C17】______crashes caused by drunk driving and ones that were clearly caused by other drivers. Since the number of people in this study was small, Simons-Morton says the results will have to be【C18】______by other research. A couple of bigger studies already【C19】______the works, might make things clearer. But Simons-Morton says this is the first totally【C20】______look at teen driver distraction.

【C1】

A．start over

B．start for

C．start off

D．come off

Tom won the first prize of oral English contest, which is beyond his().

A.contribution

B.reputation

C.expectation

A.Direct Method

B.Grammar-translation Method

C.the Audio-lingual Method

D.Situational Language Teaching

The first is broadly the way Britain is at the moment: a mosaic of communities--Bangladeshi, Afro- Caribbean, Chinese or Jewish holding fast to a strong social identity, but lumbered also with a whole raft of benefits and disadvantages, most of them defined in economic terms l6. It's possible that will still be the pattern in 50 years time, but not very likely.

……

The alternative is a pick-and-mix social landscape. At the moment ethnic minorities are moving in different directions at different rates, with personal and social engagement across ethnic boundaries increasing all the time. One crude indicator is the level of mixed race marriage: one in five Bangladeshi and Pakistani men born in Britain now has a white wife, and one in five babies born in Britain has one Afro-Caribbean and one white parent.

This implies a Britain in which people will construct multiple identities defined by all sorts of factors: class, ethnicity, gender, religion, profession, culture and economic position. It won't be clear-cut. Not all ethnic minorities, or members of an ethnic minority, will be moving in the same direction or identifying the same issues at the heart of their identities. It's about deciding who you are, but also about how other people define you.

That's what will be at the heart of the next 50 years: enduring communities linked by blood through time versus flexible, constantly shifting identities. Identity won't be about where you have come from; it will be a set of values you can take anywhere that is compatible with full participation in whichever society you live in.

A、a

B、the

C、/

D、an

The first important rule to remember when threatened by rising water is ______.

New Zealand is just west of the International Date Line, so it is the first country to get

A．frozen.

B．wet.

C．the new day.

D．united.