城市轨道交通地面正线宜采用（）。 A.长枕式整体道床  B.短枕式整体道床  C.木

(1)投资开设“氧吧” (2)宣传吸氧有健脑作用 (3)光顾“氧吧”客人日渐稀少 (4)“氧吧”经营其他项目 (5)吸氧后未见显著效果

A．1―2―3―5―4

B．5―2―1―4―3

C．2―5―1―3―4

D．1―2―5―3―4

公务员行为规范与道德的关系是（）。

A．辩证的统一，二者相辅相成。

B．对立统一、互为补充。

C．根据职业的不同，内容上互相吸收和补充。

小腿假肢的长度和健侧比较（）。

A.可比健侧长1cm

B.可比健侧长2cm

C.要求两侧一样长

D.可比健侧短1cm

E.可比健侧短3cm

阅读以下说明和C函数，将应填入______处的语句或语句成分写在对应栏内。
[说明1]
函数deldigit(char*s)的功能是将字符串s中的数字字符去掉，使剩余字符按原次序构成～个新串，并保存在原串空间中。其思路是：先申请一个与s等长的临时字符串空间并令t指向它，将非数字字符按次序暂存入该空间，最后再复制给s。
[C函数]
void deldigit(char*s)

char*t=(char*)malloc(______); /*申请串空间*/
int i,k=0;
if(!t) return;
for(i=0;i＜strlen(s);i++=
if(!(*(s+i)＞=’0’＆＆*(s+i)＜=’9’))
t[k++]=______;

______=’\0’ /*设置串结束标志*/
strcpy(s,t);
free(t);

[说明2]
函数reverse(char*s,int len)的功能是用递归方式逆置长度为len的字符串s。例如，若串s的内容为“abcd”，则逆置后其内容变为“dcba”。
[C函数]
void reverse(char*s,int len)

char ch;
if(______)

ch=*s;
*s=*(s+len-1);
*(s+len-1)=ch;
reverse(______);

The year 2005 was an exceptionally dry one for the Amazon rainforest. Thousands of square kilometers of rainforest were destroyed. The level of the mighty Amazon river and its tributaries fell to the lowest levels since records began. Fish perished in the abnormally warm waters. Boats were grounded. Locals were forced to abandon their homes. It was the kind of drought that researchers would expect no more than once a century.
But then came the drought of 2010. As a new research paper published in the journal Science today reveals, last year’s drought was even more severe than 2005. So Brazil has experienced two "once in a century" climatic events in a decade. Unsurprisingly, scientists are beginning to suspect that something is amiss. A link between these crippling droughts and climate change cannot be proved. But increasingly common drought is consistent with what scientific models predict for a globally warmer world. Increasing Atlantic sea surface temperatures are expected to lead to lower rainfall in Brazil’s great forest.
There is another deeply worrying trend. The amount of carbon dioxide pumped into the atmosphere by our societies has fallen in recent years because of the global economic downturn. But the latest readings suggest that CO₂ ievels in atmosphere still increased over that time. The fear is that this is being driven by a "feedback loop", whereby the impact of climate change itself accelerates climate change. In this case, as the climate heats up, rainforest trees fall and burn, releasing the carbon locked up in them. And this, in turn, accelerates warming further.

Again, the existence of a feedback loop is difficult to prove. But it fits predictions. Normally, rainforests function like great carbon sinks, absorbing a large proportion of the CO₂ that human activity produces. But in 2005, thanks to deforestation, the Amazon became a net emitter of carbon dioxide. In that year, the rainforest is estimated to have emitted some 5 billion tonnes of CO₂, almost as much as the entire output of the United States.
The pace of deforestation in the Brazilian rainforest appears to have slowed somewhat in recent years. But pressure on rainforests continues in equatorial regions elsewhere, from Congo to Indonesia. We need to preserve the world’s existing arboreal lungs if we are to have any chance of avoiding runaway climate change. But human activity is still depleting this crucial natural asset, even as its role in climatic regulation shows ominous signs of breaking down.
The only viable strategy for preserving the world’s rainforests that has been put forward is Reducing Emissions from Deforestation and Forest Degradation (REDD). This scheme would transfer money from high-income countries to developing countries, in order to dissuade them from cutting down their trees for profit.
But to work, this will require an overarching global climate-change treaty, with mandatory emission limits for each country. Without such a framework fiscal transfers between high-income and developing countries witl never be substantial enough to affect behaviour in poor nations and the deforestation, by ranchers and loggers, will continue. Despite the great hopes, the United Nations climate change summit in Copenhagen in 2009 failed to deliver a binding global treaty. Last year’s follow-up summit in Cancun was hailed by some environmentalists as a small step forward.
But the hour is too late for small steps. The world needs massive action, beginning immediately, to reverse the existing trends on emissions and deforestation. We also need to pray that it is not already too late.1.What are the two "once in a century" climatic events What do they tell us