Part 1 ·Read the fllowing passages, eight

题型:填空题

问题:

Part 1


·Read the fllowing passages, eight sentences have been removed from the article.
·For each gap (1-8) mark one letter (A-H) on the Answer Sheet.
·Do not mark any letter twice.
There’s a story in Texas about the rancher who complained when a well driller found oil instead of the water he had been sent to look for. "Cattle can’t drink that stuff!" the rancher cried.
That story is no longer funny. We are short of both oil and water, but the water shortage is worse. (1) And we are using water a great deal faster than it is being replaced. The replacement rate is dependent on rainfall (sometimes in the form of snow) to resupply rivers, lakes, and ground water. (2) Worse, droughts are occurring more frequently and are increasing in severity, not only in the United States but also abroad.
Even without droughts, rainfall is insufficient to maintain a balance. (3) So much water has been taken from the Colorado River by Arizona and California that Mexico has complained that those states have exceeded the U.S. share under a 1944 treaty on water-sharing. Southern Californians also have elaborated arrangements to transport water from the Pacific North west, which has it in abundance, to their area, which doesn’t have nearly enough to support its population. (4)
Short of a fanciful solution, the U.S. has two broad options, neither pleasant. We can conserve or we can produce. The former is inconvenient or worse: less irrigation (and thus less food), fewer swimming pools golf courses, and green lawns. (5) In the quantities necessary, this would probably require nuclear power. It is technically feasible, but expensive, and was considered 30 years ago as a joint U.S.-Mexican project in the Gulf of California to alleviate the Colorado river problem. As more of it is done, the cost could be expected to come down; and as we became more desperate for water, we would be more willing to pay the cost even if it didn’t come down. (6) This is an arrangement whereby large landowners would sell the groundwater under their land, for whatever the market would bear, to cities that might be hundreds of miles distant. This would involve the considerable cost of pipeline construction and would mean faster depletion of groundwater reserves. (7)
It’s a good bet that during the 21st century some new arrangements are going to have to be made about the nation’s — and the world’s — water supplies. These are likely to be neither cheap nor easy. They are more likely to be cheaper and easier if we have thought about them in advance. (8) We have been sued to choices of guns or butter. This one might be water or meat.
  • A. A century ago, a drought affected only farmers and perhaps inland navigation; now it affects everybody.
  • B. The Northwest is showing signs of getting tired of this drain.
  • C. It is not too soon to begin.
  • D. We cannot live without oil in the style to which we have become accustomed, but we cannot live at all without water.
  • E. Rivers are running dry, especially in the West.
  • F. It would also mean less food production.
  • G. A solution currently being advanced in west Texas is a concept called "Water Ranching".
  • H. The latter is expensive: desalinization of seawater.

考点:BFT考试(全国出国培训备选人员外语水平考试)BFT考试(全国出国培训备选人员外语水平考试)
题型:填空题

下图是南美洲西部纬度20°附近某地等高线分布图,读图回答下列各题。

小题1:图中①、②、③、④四条虚线正确表示图中河流分水线的是

A.①

B.②

C.③

D.④小题2:以图中分水线为界,与东部地区相比,西部地区

A.相对高度更大

B.流域面积更小

C.矿产资源更丰

D.雪线高度更低小题3:根据图示信息和所学知识可以推出

A.甲地降水比乙地少

B.甲地植被覆率比乙地低

C.甲地气温比乙地低

D.甲地河流水量比乙地大

题型:填空题

下列关于胶体的叙述不正确的是 [ ]

A.胶体是一种介稳体系   

B.用滤纸能分离胶体和悬浊液  

C.利用丁达尔效应可以区分溶液和胶体   

D.大小介于1~100 nm之间的微粒称为胶体

题型:填空题

患者男性,15岁,因“受凉后低热、流涕1周”来诊。自服“感冒通”后出现腹痛、腹泻及便血,次日双下肢膝关节以下出现散在性紫癜。血常规:血红蛋白120g/L,白细胞12×10/L,中性粒细胞0.80,血小板160×10/L。尿常规:尿蛋白阳性,红细胞10~20/HP,白细胞5~10/HP,颗粒管型1~2/HP。

过敏性紫癜出血的原因有()

A.血管损伤

B.血管系统病变

C.血小板减少

D.血友病

E.纤维蛋白原减少

F.肝疾病所致凝血酶原减少

G.使用过多抗凝药物

H.过敏性紫癜

I.感染性紫癜

题型:填空题

与普通自行车相比,电动自行车骑行更省力.下表为某一品牌电动自行车的部分技术参数.在额定输出功率不变的情况下,质量为60kg的人骑着此自行车沿平直公路行驶,所受阻力恒为车和人总重的0.04倍.当此电动车达到最大速度时,牵引力为__________N,当车速为2m/s时,其加速度为__________m/s2.(g =" 10" m/s2

题型:填空题

已知一项投资收益为20%的可能性是0.8,收益为10%的可能性是0.1,不能收回投资的可能性为0.1,则预期收益率为( )。

A.7%

B.10%

C.15%

D.20%

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