手提式灭火器设置在挂钩、托架上，其顶棚离地面高度应小于（）米A、0.5 B、1 C、1.

要设置日期和时间的显示格式，应当选择“选项”对话框中的______选项卡。

  Mass transportation revised the social and economic fabric of the American city in three fundamental ways. It catalyzed physical expansion, it sorted out people and land uses, and it accelerated the inherent instability of urban life. By opening vast areas of unoccupied land for residential expansion, the omnibuses, horse railways, commuter trains, and electric trolleys pulled settled regions outward two to four times more distant form city centers than they were in the premodern era. In 1850, for example, the borders of Boston lay scarcely two miles from the old business district; by the turn of the century the radius extended ten miles. Now those who could afford it could live far removed from the old city center and still commute there for work, shopping, and entertainment. The new accessibility of land around the periphery of almost every major city sparked an explosion of real estate development and fueled what we now know as urban sprawl. Between 1890 and 1920, for example, some 250,000 new residential lots were recorded within the borders of Chicago, most of them located in outlying areas. Over the same period, another 550,000 were plotted outside the city limits but within the metropolitan area. Anxious to take advantage of the possibilities of commuting, real estate developers added 800,000 potential building sites to the Chicago region in just thirty years – lots that could have housed five to six million people.

Of course, many were never occupied; there was always a huge surplus of subdivided, but vacant, land around Chicago and other cities. These excesses underscore a feature of residential expansion related to the growth of mass transportation: urban sprawl was essentially unplanned. It was carried out by thousands of small investors who paid little heed to coordinated land use or to future land users. Those who purchased and prepared land for residential purposes, particularly land near or outside city borders where transit lines and middle-class inhabitants were anticipated, did so to create demand as much as to respond to it. Chicago is a prime example of this process. Real estate subdivision there proceeded much faster than population growth.

小题1:With which of the following subjects is the passage mainly concerned?

[A] Types of mass transportation.

[B] Instability of urban life.

[C] How supply and demand determine land use.

[D] The effect of mass transportation on urban expansion.

小题2:Why does the author mention both Boston and Chicago?

[A] To demonstrate positive and negative effects of growth.

[B] To exemplify cities with and without mass transportation.

[C] To show mass transportation changed many cities.

[D] To contrast their rate of growth.

小题3:According to the passage, what was one disadvantage of residential expansion?

[A] It was expensive.

[B] It happened too slowly.

[C] It was unplanned.

[D] It created a demand for public transportation.

小题4:The author mentions Chicago in the second paragraph as an example of a city,

[A] that is large.

[B] that is used as a model for land development.

[C] where the development of land exceeded population growth.

[D] with an excellent mass transportation system.

Vocabulary

1.revise          改变

2.fabric          结构

3.catalyze          催化，加速

4.sort out          把……分门别类，拣选

5.omnibus          公共汽车/马车

6.trolley          （美）有轨电车，（英）无轨电车

7.periphery       周围，边缘

8.sprawl          建筑物无计划延伸，蔓延，四面八方散开

9.lot          小片土地

10.underscore       强调，在下面划横线

11.transit lines       运输线路

12.subdivision       （出售的）小块土地，再划分小区

婴幼儿初次感染HSV最易引起（）

A.口腔单纯疱疹

B.眼疱疹

C.皮肤疱疹

D.接种性疱疹

在实际应用中，对心血管疾病进行超声波检查的基本部位有哪些？

南某某是某中学学生，15岁。一天，在放学回家的路上，南某某看到商场正在进行有奖销售，每消费20元可领取奖券一张，最高奖金额为5000元，便买了一瓶价值为20元的洗发水，领到一张奖券。几天后，抽奖结果公布，南某某所持奖券中了最高奖，南某某非常高兴，将中奖的消息告诉了母亲萧某，母子二人马上去商场兑了奖，萧某把这5000元钱放到家里的箱子中。
第二天，南某某与萧某发生争执，南某某一气之下，便偷偷将柜子中的5000元钱拿出，到商场中购物消气，其见到商场中正在促销钻戒，便花了4800元买了一只钻戒。几天后，萧某要购买股票，想用箱中的钱，却发现箱中的钱已不见，于是质问南某某，南某某在质问之下说出真相。但南某某认为钱是自己中奖所得，自已有权决定想买什么就买什么。萧某则认为南某某还小，钱应当由自己和南某某的父亲支配。于是马上拉着南某某到商场，说南某某购买钻戒未征得父母同意，要求退货。售货员说钻戒售出无法退货。问：

萧某是否有权持此笔钱用于购买股票( )

A．萧某有权持此笔钱用于购买股票，因为被监护人是限制民事行为能力人

B．萧某无权持此笔钱用于购买股票，因为钱的所有权归南某某所有

C．萧某有权持此笔钱用于购买股票，因为购买股票是为了南某某的利益

D．萧某有权持此笔钱用于购买股票，因为萧某为南某某的监护人