尖锐湿疣的镜下特点不包括（） A.鳞状上皮呈 * * 状增生，弥漫性角化不全 B.表皮突增

人站在地上，手直接触及已经漏电的电动机金属外壳的电击是（）电击。

A、间接接触

B、直接接触

C、感应电

D、两线

女性，57岁，左鼻翼皮肤病损18个月，面积逐渐增大，反复出现破溃，就诊时检查：病损位于左鼻翼，约1cm×1cm，略高出皮肤，中央表浅溃疡，有薄层黑褐色痂皮覆盖，腮腺区和颌下未扪及肿大淋巴结。

在鼻翼部位最安全可行的手术切除深度为（）。

A.紧贴真皮下切除

B.在皮下组织深层切除

C.保留鼻翼软骨，紧贴软骨表面切除

D.连同鼻翼软骨一并切除，保留鼻前庭的皮肤和黏膜

E.鼻翼的全层切除

巴塞尔委员会通过的《巴塞尔资本协议》是衡量单家银行乃至整个银行体系稳健性最重要的指标，为各国银行监管当局提供了统一的资本监管框架。《巴塞尔资本协议》确定了资本的构成，即银行的资本分为核心资本和附属资本两大类，且附属资本规模不得超过核心资本的( )。

A．50%

B．80%

C．100%

D．150%

一个自然数总比它的倒数大．______．

(46)The climatic phenomenon that is being blamed for floods, hurricanes and early snowstorms also deserves credit for encouraging plant growth and helping to control the pollutant linked to global warming, a new study shows.
E1 Nino—the periodic warming of eastern Pacific Ocean waters—causes a burst of plant growth throughout the world, and this removes carbon dioxide from the atmosphere, researchers have found.
(47)The new study shows that natural weather events，such as the brief warming caused by E1 Nino, have a much more dramatic effect than previously believed on how much carbon dioxide is absorbed by plants and how much of the gas is expelled by the soil.
Atmospheric carbon dioxide, or CO₂, has been increasing steadily for decades. This is thought to be caused by an expanded use of fossil fuels and by toppling of tropical forests. Scientists have linked the CO₂ rise to global warming, a phenomenon known as the greenhouse effect. (48)Alarmed, nations of the world now are drawing up new conservation policies to reduce fossil fuel burning, in hopes of reducing greenhouse gases in the atmosphere.
But David Schimel of the National Center for Atmospheric Research，a co-author of the new study, says that before determining how much to reduce fossil fuel burning we should consider the effects of natural climate variations on the ability of plants to absorb CO₂.
Schimel said satellite measurements of CO₂, plant growth and temperature show that natural warming events such as E1 Nino at first cause more CO₂ to be released into the atmosphere, probably as the result of accelerated decay of dead plant matter in the soil. But later, within two years, there is an explosion of growth in forests and grasslands, which means plants suck more carbon dioxide out of the atmosphere.
" We think that there is a delayed response in vegetation and soil to the warming effects of such phenomena as E1 Nino, and this leads to increased plant growth, " said Schimel.
(49)However, he said, it is not clear whether the warming by E1 Nino causes a net decrease in the buildup of CO₂ over the long haul. " We don’t really know that yet, " said Schimel. What the study does show, however, is that the rise and fall of CO₂ in the atmosphere is ply influenced by natural changes in global temperature, said B. H. Braswell of the University of New Hampshire, another co-author of the study.
Braswell said that in years when the global weather is cooler than normal, there is a decrease in both the decay of dead plants and in new plant growth. This causes an effect that is the opposite of E1 Nino warming: CO₂ atmosphere levels first decline and later increase.
(50) " I think we have demonstrated that the ecosystem has a lot more to do with climate change than was previously believed," said Braswell, " Focusing on the role of human activity in climate change is important, but manmade factors are not the only factors. \