低位小肠梗阻的特征是（） A.腹部肠形不明显 B.水电解质紊乱出现较早 C.呕吐不频

简述流动性陷阱。

苏、黄、米、蔡“四大家”是我国______代的著名书法家。

A．汉

B．晋

C．唐

D．宋

男性，30岁，发现高血压、间断双下肢水肿1年，加重20天。查体：BP160／100mmHg，咽红，心率78次／分，双下肢水肿。化验：尿蛋白（++），尿沉渣镜检RBC满视野，血肌酐210μmol／L，尿比重1．018，肝功能正常，乙肝两对半阴性。无高血压家族史。

提示：24小时尿蛋白定量2．6g／24小时，血常规正常，补体c3正常，内生肌酐清除率80ml／min，左肾9．2cm×5．6cm，右肾10．3cm×4．6cm。提问：最可能的临床诊断是（）

A.急性肾小球肾炎

B.急进性肾小球肾炎

C.慢性肾小球肾炎

D.隐匿性肾小球肾炎

E.肾病综合征

F.IgA肾病

根据我国现行建筑安装工程费用项目组成的规定，下列属于直接工程费的是( )。

A．企业管理费

B．措施费

C．施工机械使用费

D．大型机械设备进出场及安拆费

In most parts of the world, climate change is a worrying subject. Not so in California. At a recent gathering of green luminaries—in a film star’s house, naturally, for that is how seriousness is often established in Los Angeles—the dominant note was self-satisfaction at what the state has already achieved. And perhaps nobody is more complacent than Arnold Schwarzenegger. Unlike A1 Gore, a presidential candidate turned prophet of environmental doom, California’s governor sounds cheerful when talking about climate change. As well he might: it has made his political career.

Although California has long been an environmentally-conscious state, until recently greens were concerned above all with smog and redwood trees. "Coast of Dreams", Kevin Stag’s authoritative history of contemporary California, published in 2004, does not mention climate change. In that year, though, the newly-elected Mr. Schwarzenegger made his first tentative call for western states to seek alternatives to fossil fuels. Gradually he noticed that his efforts to tackle climate change met with less resistance, and more acclaim, than just about all his other policies. These days it can seem as though he works on nothing else.

Mr. Schwarzenegger’s transformation from screen warrior to eco-warrior was completed last year when he signed a bill imposing legally-enforceable limits on greenhouse—gas emissions—a first for America. Thanks mostly to its lack of coal and heavy industry, California is a relatively clean state. If it were a country it would be the world’s eighth-biggest economy, but only its 16th-biggest polluter. Its big problem is transport—meaning, mostly, cars and trucks, which account for more than 40% of its greenhouse-gas emissions compared with 32% in America as a whole. The state wants to ratchet down emissions limits on new vehicles, beginning in 2009. Mr. Schwarzenegger has also ordered that, by 2020, vehicle fuel must produce 10% less carbon: in the production as well as the burning, so a simple switch to corn-based ethanol is probably out.

Thanks in part to California’ s example, most of the western states have adopted climate action plans. When it comes to setting emission targets, the scene can resemble a posedown at a Mr. Olympia contest. Arizona’s climate-change scholars decided to set a target of cutting the state’s emissions to 2000 levels by 2020. But Janet Napolitano, the governor, was determined not to be out-muscled by California. She has declared that Arizona will try to return to 2000 emission levels by 2012.

California has not just inspired other states; it has created a vanguard that ought to be able to prod the federal government into per national standards than it would otherwise consider. But California is finding it easier to export its policies than to put them into practice at home. In one way, California’ s self-confidence is fully justified. It has done more than any other state—let alone the federal government—to fix America’s attention on climate change. It has also made it seem as though the problem can be solved. Which is why failure would be such bad news. At the moment California is a beacon to other states. If it fails, it will become an excuse for inaction.

It can be inferred from the text that（）

A. California needs further actions to inspire other states

B. California has set a perfect model for other states to follow

C. California will become an excuse for inaction for other states

D. California might find it difficult to execute its own policies