不属急性肾盂肾炎临床表现的是（） A.畏寒、发热 B.尿频、尿急、尿痛 C.腰痛 D

治疗急、慢性骨髓炎宜选用

A．青霉素G

B．林可霉素

C．庆大霉素

D．环素

E．霉素

在面向对象设计中，对象有很多基本特点，其中“一个系统中通常包含很多类，这些类之间呈树形结构”这一性质指的是对象的( )。

A．分类性

B．标识唯一性

C．继承性

D．封装性

A couple of years ago, those who forecast that oil price would reach $ 100 a barrel were seen as doomsters. However, now some are predicting $ 200 a barrel.

Had economists been told that oil price would barely pause at $ 100 before reaching the recent peak of nearly $ 127, they would no doubt have forecast terrible economic consequences. But the global economy, though interrupted by the high price of energy, is still chugging along. Meanwhile, inflation has picked up, but the headline rates of inflation (通货膨胀率) in most developed countries are nowhere near the levels seen in the 1970s and 1980s.

There are three explanations for the oil price’s unclear impact. The first is that nowadays developed economies are more efficient in their use of energy, thanks partly to the increased importance of service industries and the diminished role of manufacturing(制造业). According to the Energy Information Administration, the energy intensity of America’s GDP fell by 42% between 1980 and 2007.

A second theory is that the oil-price rise has been steady, not sudden, giving the economy time to adjust. Giovanni Serio of Goldman Sachs points out that in 1973 there was a severe supply shock because of the oil embargo(石油禁运), when the world had to cope with 10%-15% less crude almost overnight. Not this time.

The third explanation turns the argument on its head; rather than oil harming the global economy, it is global expansion that is driving up the price of oil.

The most important factor is the shift in favor of the developing economies. America has responded to high price in familiar fashion: UBS forecasts that demand will drop by 1.1% this year and will be no higher in 2010 than it was in 2004. But the demand from China and other emerging markets is more than offsetting(抵消) this shortfall.

小题1:What is the passage mainly talking about?

A．The prediction of economists.

B．The situation of economy

C．The increase of oil price

D．The American response to high price小题2:How many explanations for the oil price’s impact are mentioned in the passage?

A．Two

B．Three

C．Four

D．Five小题3:What can we conclude from the passage?

A．In USA, the demand for oil in 2010 will be very high.

B．In USA, the demand for oil in 2010 will be higher than it was in 2004.

C．In USA, the demand for oil in 2010 will be as high as it was in 2004.

D．In USA, the demand for oil in 2010 will be as low as it was in 2004.

茯苓利尿的主要成分是（）

A.β-茯苓聚糖

B.茯苓醇

C.茯苓素

D.茯苓多糖

E.茯苓酸

电动机是天车上最重要的（）设备之一。