当两条直线相交成（ ）时，这两条直线互相垂直，这两条直线的（ ）叫做（ ）。

凝血试验血标本抗凝通常用

A．EDTA盐

B．草酸钠

C．枸橼酸钠

D．肝素

E．草酸钾

根据商标法及相关规定，下列关于注册商标使用许可的说法哪些是正确的

A．商标使用许可合同未在商标局备案的，不具有法律效力

B．商标使用许可合同未在商标局备案的，不得对抗善意第三人

C．许可人应当监督被许可人使用该注册商标的商品质量

D．被许可人必须在使用该注册商标的商品上标明其名称和商品产地

三音节词略写法包括（）。

A.两个有实在意义的语素加后缀三音节词

B.肯定三音节词

C.否定三音节词

D.熟知三音节词

Learning to drive is important to the independence of teenagers, but it is also a great responsibility．Although having a law that keeps 16-year-old drivers from having more than one teenager in the car with them at first seems unfair, there are convincing reasons for this requirement．

The Insurance Institute for Highway Safety reports that teens are four times more likely than older drivers to be involved in an automobile accident．It also reports that 16-and 17-year-old drivers are twice as likely to have an accident if they have two teenage friends in the car and four times as likely to have one if they have three or more teenage friends in the car with them．Fatal （ 致命的） crashes of 16-year-old drivers involve the highest percentage of speeding, driver error, and number of passengers．This information is enough to cause any reasonable person to wonder about the wisdom of allowing new teen drivers to take a carload of friends anywhere, even if the law permits it．

A study at the National Institutes of Health indicates that the part of the human brain that controls judgment and evaluates the consequences of our actions might not be fully formed until the age of 25．Until this study, researchers had placed the age at 18．If this is true, it could explain the reckless （鲁莽的） behavior of many teens, behavior that often extends into their twenties．It also could be a strong reason for being cautious about the driving circumstances of young people．

This is not the only study that indicates such caution is necessary．One study at Temple University in Philadelphia examines the results of peer（同龄人） pressure in risky driving situations．The study, which uses a driving game, has an individual guide a car through a course, both alone and in the presence of friends．Three different age groups participated in the study: 13-16, 18-22, and 24 and older．Members of the oldest group showed caution whether driving alone or with friends present, but the two younger groups took more chances when they were with their friends．Furthermore, because these drivers were accustomed to the noise and distraction of many passengers, they were unable to see their own mistakes．Once again, this is a good indication that a law restricting the number of teenagers in the car with a young driver is a good idea．

小题1:What does the author mainly tell us in Paragraph 2?

A．Many deaths have occurred because of inexperience and overconfidence．

B．It' s reasonable to severely limit the passenger number of teen drivers．

C．New teen drivers have to ask permission before driving with friends．

D．There are many causes behind the teens' driving accidents．小题2:From the two studies, the author probably suggests that ______．

A．different age groups have different peer pressure

B．teenagers often give wrong judgments above passengers' noise

C．underdeveloped brain makes teens ignore their mistakes

D．driving circumstances are bound up with（与…密切相关） the risk of accidents小题3:We can infer that the law restriction can probably ______．

A．protect teens on the highway

B．raise teens' sense of responsibility

C．reduce the number of fatal crashes

D．force teens to drive with caution小题4:With which statement would the author most likely disagree?

A．Some teenagers have risky behavior while driving．

B．Certain laws treat teenagers and adults differently．

C．We still need more studies on teen driving．

D．Driving is important to a teenager' s sense of independence．

下列关于资本监管的说法，不正确的是( )。

A．商业银行的核心资本具备两个特征：一是应能够不受限制地用于冲销商业银行经营过程中的任何损失；二是随时可以动用

B．按照《商业银行资本充足率管理办法》，商业银行资本充足率不得低于8%，核心资本充足率不得低于4%

C．未分配利润属于核心资本

D．少数股权属于附属资本