数据库系统的三级组织结构中，系统程序员视图是【 】。

下列省级行政区，与湖南省相邻的是      [ ]

A．福建

B．河南

C．安徽

D．重庆

下列山脉不是东北—西南走向的是[ ]

A．大兴安岭

B．太行山

C．巫山

D．天山

A proposal to change long-standing federal policy and deny citizenship to babies born to illegal immigrants on U. S. soil ran aground this month in Congress, but it is sure to resurface—kindling bitter debate even if it fails to become law.
At issue is "birthright citizenship" —provided for since the Constitution’s 14th Amendment was ratified in 1868. Section 1 of that amendment, drafted with freed slaves in mind, says: "All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States."
Some conservatives in Congress, as well as advocacy groups seeking to crack down on illegal immigration, say the amendment has been misapplied over the years, that it was never intended to grant citizenship automatically to babies of illegal immigrants. Thus they contend that federal legislation, rather than a difficult-to-achieve constitutional amendment, would be sufficient to end birthright citizenship.
"Most Americans feel it doesn’t make any sense for people to come into the country illegally, give birth and have a new U.S. citizen," said the spokesman of the federation of American immigration reform. "But the advocates for illegal immigrants will make a fuss; they’ll claim you’re punishing the children, and I suspect the leadership doesn’t want to deal with that. \

在北京、上海、广州等一线城市打拼数年后，不少年轻人重新选择到二、三线城市发展，被舆论称为“逃离北上广”。这对劳动者的启示是（）

A.要完善市场就业机制

B.要树立职业平等观

C.要实施积极的就业政策

D.要灵活多样自主择业

铣斜面一般常用哪些方法？