听力原文: From this lookout we enjoy one of the most spectacular views of San Francisco. As you can see, the city rests on a series of hills varying in altitude from sea level to 938 feet. The first permanent settlement was made at this site in 1776. For 13 years the village had fewer than one hundred inhabitants. But in 1848 with the discovery of gold, the population grew to ten thousand. The same year the name was changed from Yerba Buea to San Francisco.
By 1862 telegraph communications linked San Francisco with eastern cities, and by 1869 the first transcontinental railroad connected the Pacific coast with the Atlantic seaboard. Today San Francisco has a population of almost three million. It is the financial center of the west, and serves as the terminus for trans-Pacific steamship lines and air traffic. The port of San Francisco, which is almost 18 miles long with 42 piers, handles between five and six million tons of cargo annually.
And now, if you will look to your right, you should just be able to see the east section of the Golden Gate Bridge. The bridge, which is more than one mile long, spans the harbor from San Francisco to Marin County and the Red Wood Highway. It was completed in 1937 at a cost of 32 million dollars and is still one of the largest suspension bridges in the world.
(36)
A.Gold was discovered.
B.The transcontinental railroad was completed.
C.The Golden Gate Bridge was constructed.
D.Telegraph communications were established with the East
第2题
以下关于酸碱平衡与血钾浓度的相互关系,正确的说法是
A.代谢性酸中毒时可引起低血钾
B.低血钾时可引起代谢性碱中毒
C.代谢性碱中毒时可引起高血钾
D.高血钾时可引起代谢性碱中毒
E.低血钾时可引起代谢性酸中毒
第3题
以下关于酸碱平衡与血钾浓度的相互关系,正确的说法是
A.代谢性酸中毒时可引起低血钾
B.低血钾时可引起代谢性碱中毒
C.代谢性碱中毒时可引起高血钾
D.高血钾时可引起代谢性碱中毒
E.低血钾时可引起代谢性酸中毒
第4题
关于皮质醇增多症临床表现,以下哪项是错误的
A.向心性肥胖
B.多血质
C.糖耐量降低
D.低血钠、高血钾
E.高血压
第5题
A.代谢性酸中毒时可引起低血钾
B.低血钾时可引起代谢性碱中毒
C.代谢性碱中毒时可引起高血钾
D.高血钾时可引起代谢性碱中毒
E.低血钾时可引起代谢性酸中毒
第7题
A.酸中毒时血钾更低
B.腹泻时排钾过多致低钾
C.补液后钾从尿中排出增加
D.补液后血钾较补液前相对较低
E.血钾低于3.5mmol/L时出现低钾症状
第8题
关于转移性低钾症的论述说法错误的是
A.心肺复苏后,使肾上腺素分泌增多,促进钾进入细胞内
B.以上都不是
C.叶酸治疗贫血时使钾减少
D.低温疗法使钾进入细胞内
E.反复输入冷存洗涤过的红细胞,可引起转移性低血钾
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