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问题 选择题

关于下图的叙述，正确的是（    ）

A．甲图表示的地层中，②地层含有石油，开采时应在a处钻井

B．乙图表示的地层中，b处绝对不会含有化石

C．丙图表示流动沙丘，其所在地的盛行风向如a箭头所示

D．丁图所示地形是流水侵蚀作用形成的

答案

答案：B

背斜是良好的储油构造，开采时应该在背斜顶部，故A错。化石存在于沉积岩中，岩浆岩中不可能有化石的存在。不管是静止沙丘还是移动沙丘，其迎风坡一侧较为和缓。丁图所示地形为‘U’形谷，应该为冰川侵蚀地貌。

单项选择题

从爱国与民族意识、文史哲常识和文化与生活价值观考察，发现（）。

A．大学生有人生的理想信念，但缺少精神的滋养和文化的浸润

B．有相当一部分大学生对我国某些方面落后的现状持消极态度

C．大学生具有强烈爱国与民族意识、丰富的文史哲知识、健康的文化情趣，但理想信念摇摆不定

D．大学生理想信念坚定，爱国与民族意识强，学识丰厚
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填空题

Questions 19-25


·Read the following article from a magazine and answer questions 19-25.
·For questions 19-25, choose the correct answer A, B, C or D.
·Mark your answer on the Answer Sheet.

The Big Easy on the Brink


A Category 5 hurricane would come barreling out of the Gulf of Mexico, It would cause Lake Pontchartrain, north of New Orleans, to overflow, pouring down millions of gallons of water on the city. Then things would really get ugly. Evacuation routes would be blocked. Buildings would collapse. Chemicals and hazardous waste would dissolve, turning the floodwaters into a lethal soup. In the end, what was left of the city might not be worth saving. "There’s concern it would essentially destroy New Orleans," says Suhayda, a water-resources expert at Louisiana State University.
New Orleans has always had a complicated relationship with the water surrounding it. Everyone told the first settlers this was the wrong place to build a city. It is wedged precariously between the mighty Mississippi and Lake Pontchartrain, and most of it was once swampland. Aggravating the problem is the fact that much of New Orleans is below sea level, so that after a good rain, the water just settles in. There is now a decent pumping system, which helps. Old-timers, however, still talk of the days when, after a bad storm, bodies were washed out of the cemeteries.
What is threatening New Orleans is a combination of two man-made problems: more levees and fewer wetlands. The levees installed along the Mississippi to protect the city from water surges have had an annoying effect: they have actually make it more vulnerable to flooding. That’s because New Orleans has been kept in place by the precarious balance of two opposing forces. Because the city is constructed on 100 feet of soft silt, sand and clay, it naturally "subsides", or sinks, several feet a century. Historically, that subsidence has been counteracted by sedimentation: new silt, sand and clay that are deposited when the river floods. But since the levees went up-mostly after the great flood of 1927—the river has not been flooding and sedimentation has stopped.
New Orleans’ other major man-made problem is that its wetlands and its low-lying barrier islands are disappearing. The Louisiana coast is losingl6,000 acres of wetland each year, mostly as a result of population expansion into once pristine areas, destructive oil and gas drilling, pollution and land loss through lack of sedimentation. As it turns out, wetland, and barrier islands aren’t just nice to look at; they are also a key natural barrier to hurricanes. (Every 2.7miles of wetland absorbs a foot of storm surge.) As the wetlands go, the chance of a hurricane blowing the city away grows.
So far, little has been done to save the city. However, while the grimmest of the doomsayers warn that New Orleans could be next Atlantis, some laid-back residents are saying that it could just as easily become the next Venice and that after the flood, the good times won’t roll—they’ll float.

It seems that ______.

A．all people have got much worried about the future of the city

B．some people are expecting a better view of the city after heavy storms

C．some people are leaving the city as it is not a good place to build a city

D．all people have an easy-going attitude towards the future of the city
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