衡量和考察财政支出的指标通常是以财政支出的（）来表示。 A.绝对量 B.相对量 C.

下列说法中正确的是（　　）

①有加速度的物体速度大小一定增加②没有加速度的物体速度大小一定不变③物体的速度发生变化，则必有加速度④如果加速度为零，则速度也一定为零．

A．①②

B．②③

C．③④

D．①④

简述流通在社会经济中的地位与作用。

　　假如你是广播电台少儿栏目的主持人，请根据少儿听众的特点，重新表述下面一段文字的画线部分。不得改变原意。不超过80个字。

　　蔚蓝的天空，万里无云。碧绿的草地上，一条小溪潺潺流过，水中的卵石清晰可见。溪边坐着一位长髯老者，面容清瘦，双目炯炯有神。

_____________________________________________________

学习准备

阅读理解。

    A recent study, which was published in last week's Journal of the American Medical Association,

offers a picture of how dangerous it is to get a lift from a teenage driver. Indeed, a 16-year-old driver

with three or more passengers has three times the possibility of a serious accident, compared with a

teenager driving alone.

     The authors also found that the death rates for teenage drivers increased greatly after 10 p.m., and

especially after midnight. With passengers in the car, the driver was even more likely to die in a late-night

accident.

     Robert Foss, a scientist at the University of North Carolina Highway Safety Research Center, says

the higher death rates for teenage drivers have less to do with "really stupid behavior" than with just a lack of driving experience. "The basic issue is that adults who are responsible for giving out licenses fail to

recognize how complex and skilled driving is." he says.

     Both he and the author of the study believe that the way to mitigate (使缓解) the problem is to have

states set up so-called graduated licensing systems, in which getting a license is a process with several

stages. A graduated license requires that a teenager first prove himself able to drive in the presence(在场)

of an adult, followed by a period of driving with night of passenger restrictions (限制) before graduating

to full driving rights.

     Graduated licensing systems have reduced teenage driver crashes, according to recent studies.

1.Which of the following situations is most dangerous according to the passage?

A. Adults giving a lift to teenagers on the highway after 10 p.m.

B. A teenager driving after midnight with passengers in the car.

C. Adults driving with three or more teenage passengers late at night.  

D. A teenager getting a lift from a stranger on the highway at midnight.

2. According to Robert Foss, the high death rate of teenage drivers is mainly due to _____.

A. their lack of driving experience

B. their frequent driving at night

C. their wrong way of driving    

D. their driving with passengers

3. According to Paragraph 3, which of the following statements is TRUE?

A. Teenagers should spend more time learning to drive.

B. Driving is a skill too complex for teenagers to learn.

C. Restrictions should be forced on teenagers demanding to take driving licenses.  

D. The licensing department is partly responsible for teenagers' driving accidents.

4. A suggested measure to be taken to reduce teenagers' driving accidents is that _____.

A. the licensing system should be improved

B. they should be forbidden to take on passengers

C. they should not be allowed to drive after 10 pm

D. driving in the presence of an adult should be made a rule