客人打电话找总经理或部门经理，怎么办？

Some people talk about immigration in terms of politics, some in terms of history. But the core of the matter is numbers. The Labor Department says that immigrants make up about 15 percent of the work force. It’s estimated that a third of those are undocumented workers. The Pew Hispanic Center estimates that one in four farmhands in the United States is an undocumented immigrant, and that they make up a significant portion of the people who build our houses, clean our office buildings and prepare our food.

America has become a nation dependent on the presence of newcomers, both those with green cards and those without. Business leaders say agriculture, construction, meatpacking and other industries would collapse without them.

Sure, it would be great if everyone were here legally, if the immigration service weren’t such a disaster that getting a green card is a life’s work. It would be great if other nations had economies robust enough to support their citizens so leaving home wasn’t the only answer. But at a certain point public policy means dealing not only with how things ought to be but with how they are. Here’s how they are: these people work the jobs we don’t want, sometimes two and three jobs at a time. They do it on the cheap, which is tough, so that their children won’t have to, which is good. They use services like hospitals and schools, which is a drain on public coffers, and they pay taxes, which contribute to them.

Immigration is never about today, always about tomorrow, an exercise in that thing some native-born Americans seem to have lost the knack for: deferred gratification. It’s the educated man who arrived in the Washington D. C., area and took a job doing landscaping, then found work as a painter, then was hired to fix up an entire apartment complex by someone who liked his work ethic. He started his own business and wound up employing others. Does it matter that he arrived in this country with no work visa if he is now supporting the nation’s economy

If any towns, whose aging populations were on the wane before the immigrants arrived, succeed in driving newcomers away, those who remain will find themselves surrounded by empty storefronts, deserted restaurants and houses that will not sell. It’s the civic equivalent of starving to death because you don’t care for the food. But at least everyone involved can tell themselves their town wasted away while they were speaking English.

In the author’s opinion, why do undocumented immigrants straggle for life（）

A. provide services to US citizens

B. do those the US citizens don’t want to do

C. enable their own country be robust enough to support themselves

D. make their children to be legal citizens of the US

挂线疗法

A．适用于低位复杂性肛瘘

B．适用于高位复杂性肛瘘

C．适用于低位单纯性肛瘘

D．适用于高位单纯性肛瘘

E．可防止术后肛门失禁

美国宪法规定：“美国国会对总统、副总统及官员有弹劾权，提出弹劾之权属于众议院，审判弹劾之权属于参议院。”这反映了

A．分权制衡

B．司法独立

C．自由平等

D．人民主权

病历摘要：患者男性，74岁。有吸烟史近50余年，反复咳嗽咯痰8年余，冬春季尤甚，近2年来时有气喘，2天前受凉后症状复发，出现咳嗽、咯痰清稀，喘息气逆，倚息不得平卧，胸满气憋，心悸，面目肢体浮肿，小便量少，畏寒肢冷，面唇青紫，脘痞纳差，舌胖质黯，苔白滑，脉沉细滑。

该病人此时有效的治疗措施哪些不正确？（）

A.机械通气

B.保持呼吸道通畅，促进排痰

C.抗感染

D.支气管舒张剂

E.肺减容术

F.胃肠减压