女，45岁，出现发热、尿频、尿急、尿痛症状，最可能的诊断为（） A.急性膀胱炎 B.

外潜伏期是指（）

A.自病原体侵入机体至最早出现临床症状的这段时间

B.病原体侵入吸血节肢动物体内至使吸血节肢动物具有感染性的这段时间

C.病原体不断更替宿主的过程

D.病原体从传染源排出至侵入新的易感宿主之前的这段时间

E.自病原体侵入机体至具有感染力的这段时间

The one million people of the city,________ thought little of these events , _______to bed as usual that night .

A．which…going

B．where…went

C．who…went

D．who… going

患者男性，38岁。尿毒症，血压185/110mmHg。心率60次/分，ECG显示ST-T波改变，维持血液透析4年，拟行同种异体肾移植手术。采用硬膜外麻醉最佳穿刺点是（）

A.L4～5

B.T12～L1和L1～2间隙

C.L3～4

D.T11～12

E.T11～12和L3～4

有一台气关式单座调节阀老是关不死，试分析其故障原因？

While the ripples of America’s subprime-mortgage crisis have spread far and wide, Latin America—a place long associated with financial disaster—has remained improbably calm. Banks have reported no unpleasant surprises. Brazil and Peru have been blessed with coveted investment-grade ratings. Surprisingly, perhaps the fleetest country of all has been Argentina. Since it emerged from the financial crisis of 2001-02, it has been one of the world’s fastest-growing economies. It is expected to expand faster than most of its neighbors again this year.

Quite simply, it barely has any credit. Back when its economy virtually collapsed, the country suffered a run on its banks, followed by a freeze on withdrawals, and a massive currency devaluation. As a result, bank lending to the private sector shrivelled, from 23.8% of GDP in 2000 to 10.8% in 2003. Since then, it has rebounded to a piddling 13% ; by contrast, the ratio in Brazil was 36.5% in 2006. Almost all of these loans in Argentina are accessible only on a short-term basis.

Once its recovery began in June 2002, Argentina became a paradise for business. Unemployment of over 20% kept wages down, and the devaluation gave exporters an edge on foreign competitors. The ample productive capacity left idle by the crisis meant firms could expand without making big investments. And the windfall profits reaped by agricultural exporters, thanks to record commodities prices, enabled many of them to finance new projects out of earnings. Hence the economy could grow at almost 9% a year with little need for credit.

But such a lucky confluence of factors could not last. Starting in early 2005 ,.inflation picked up, a sign that the installed capacity was starting to limit output. Salaries and prices for raw materials increased sharply, cutting into profits. And farmers were particularly hard hit when the government nearly doubled the taxes in farm exports. Now, just as companies need to embark on big investments if they are to keep growing, their margins are no longer big enough to pay for the expansion and they need to borrow.

So, the time is ripe for the country’s financial system to recover. But a number of things are in the way. Foremost is Argentina’s business risk. Those in the informal economy (which represents over 40% of GDP) can neither save nor borrow legally, lest they become known to the taxmen. The rest remain cowed by memories of the crisis. Although Argentines have poured their savings into property, fuelling a construction boom, they still hold about four-fifths of their deposits abroad.

Inflation, fuelled by a public-spending binge, state-mandated wage increases, and a cheap currency, is not helping either. No one knows how high it is. The consumer-price index is doctored to keep the official rate below 10%, but private estimates suggest it is near 25%. Without a reliable index of inflation, lending is almost impossible, even for the medium term. And the central bank has kept interest rates ply negative in real terms, encouraging workers to spend their wages rather than to save.

It can be inferred from the first paragraph that（）

A. Latin America has been greatly influenced by America’s subprime-mortgage crisis

B. Latin America is suffering a financial disaster

C. Argentina has suffered a financial crisis at the beginning of this century

D. Argentina’s economy grows faster than any other countries’ economy