2003年10月17日《环境时报》报道,上海市规划工作会议将讨论限制上海建筑物高度问

题型:单项选择题 案例分析题

问题:

2003年10月17日《环境时报》报道,上海市规划工作会议将讨论限制上海建筑物高度问题。上海市的高楼问题不仅引起了居民的日照问题,而且加剧了这座城市的下沉。目前,上海每年以1厘米的速度下沉,如果不采取措施,很快就会被海水淹没。在上海市规划工作会议上,将酝酿“双增双减”政策,双增就是要增加公共绿地、公共活动空间;双减就是要减少建筑物容量、降低建筑物高度。根据材料和有关知识回答以下问题

“双减”的目的主要是()

A.解决市民日照问题

B.解决交通拥挤问题

C.控制地面负荷,减轻沉降

D.减轻大气污染

考点:高级中学地理地理环境要素和区域地理地理环境要素和区域地理题库
题型:单项选择题 案例分析题

一列简谐横波沿x轴负方向传播,图a是t=1 s时的波形图,图b是某振动质点的位移随时间变化的图象,则图b可能是图a中哪个质点的振动图象   (  )

A.x=0处的质点

B.x=1 m处的质点

C.x=2 m处的质点

D.x=3 m处的质点

题型:单项选择题 案例分析题

阅读理解。

     American society is not nap (午睡)-friendly. In fact, says David Dinges, a sleep specialist

at the University of Pennsylvania School of Medicine,"There's even a prohibition against admitting

we need sleep". Nobody wants to be caught napping or found asleep at work. To quote a

proverb:"Some sleep five hours, nature requires seven, laziness nine and wickedness eleven."

     Wrong. The way not to fall asleep at work is to take naps when you need them."We have to

totally changeour attitude toward napping,"says Dr. William Dement of Stanford University, the

godfather of sleep research.

     Last year a national commission led by Dement identified an"American sleep debt" which one

member said was as important as the national debt. The commission was concerned about the

dangers of sleepiness: people causing industrial accidents or falling asleep while driving. This may

be why we have a new sleep policy in the White House. According to recent reports, President

Clinton is trying to take a ha1f-hour snooze (瞌睡) every afternoon.

     About 60 percent of American adults nap when given the opportunity. We seem to have"a

mid afternoon quiet phase," also called "a secondary sleep gate." Sleeping 15 minutes to two

hours in the early afternoon can reduce stress and make us refreshed. Clearly, we were born

to nap.

     We Superstars of Snooze don't nap to replace lost shut-eye or to prepare for a night shift.

Rather, we "snack" on sleep, whenever, wherever and at whatever time we feel like it. I myself

have napped in buses, cars, planes and on boats; on floors and beds; and in libraries, offices

and museums.

l. It is commonly accepted in American society that too much sleep is ._____

A. unreasonable

B. criminal

C. harmful

D. costly

2. The research done by the Dement Commission shows that Americans ________.

A. don't like to take naps

B. are terribly worried about their national debt

C. sleep less than is good for them

D. have caused many industrial and traffic accidents

3. The purpose of this article is to.______

A. warn us of the wickedness of napping

B. explain the danger of sleepiness

C. discuss the side effects of napping

D. convince the reader of the necessity of napping

4. The underlined phrase "American sleep debt" in Para. 3 is the result of ._____

A. the traditional misconception the Americans have about sleep

B. the new sleep policy of the Clinton Administration

C. the rapid development of American industry

D. the Americans' worry about the danger of sleepiness

5. The second sentence of the last paragraph tells us that it is .______

A. preferable to have a sound sleep before a night shift

B. good practice to eat something light before we go to bed

C. essential to make up for cost sleep

D. natural to take a nap whenever we feel the need for it

题型:单项选择题 案例分析题

下列关于Kaposi肉瘤的描述,正确的是

A.来源于纤维组织的恶性肿瘤
B.仅累及皮肤
C.肿瘤边界清楚
D.是由梭形细胞和血管构成的恶性肿瘤

题型:单项选择题 案例分析题

寡头垄断型市场是指相对少量的生产者在某种产品的生产中占据很大市场份额,从而控制了这个行业的供给的市场结构,该市场结构得以形成的原因有()。

A.由于产品差异性的存在,生产者可以树立自己产品的信誉,从而对其产品的价格有一定的控制能力

B.这类产品通常因获得政府授予的特许专营而阻碍了其他生产者进入

C.这类行业初始投入资本较大,阻止了大量中小企业的进入

D.这类产品只有在大规模生产时才能获得好的效益,这就会在竞争中自然淘汰大量的中小企业

题型:单项选择题 案例分析题

对于未按期还书的村民,管理员可以采取哪些措施来督促?

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