2017年職稱英語試題《綜合A》閲讀理解訓練題
2017年職稱英語將在12月份開始報名,職稱英語考試難度大,以下是yjbys網小編整理的關於職稱英語試題《綜合A》閲讀理解訓練題,供大家備考。
Superconductor Ceramic (陶瓷)
An underground revolution begins this winter. With the flip (輕擊) of a switch, 30,000 homes in one part of Detroit will soon become the first in the country to receive electricity transmitted by ice-cold high-performance cables. Other American cities are expected to follow Detroit's example in the years ahead, which could conserve enormous amounts of power.
The new electrical cables at the Frisbie powe.r station in Detroit are revolutionary because they are made of superconductors. A superconductor is a material that transmits electricity with little or no resistance. Resistance is the degree to which a substance resists electric current. All common electrical conductors have a certain amount of electrical resistance. They convert at least some of the electrical energy passing through them into waste heat. Superconductors don't. No one understands how superconductivity works. It just does.
Making superconductors isn't easy. A superconductor material has to be cooled to an extremely low temperature to lose its resistance. The first superconductors, made more than 50 years ago, had to be cooled to -263 degrees Celsius before they lost their resistance. Newer superconducting materials lose their resistance at -143 degrees Celsius.
The superconductors cable installed at the Frisbie station is made of a ceramic material that contains copper, oxygen; bismuth(鉍 ), strontium(偲 ), and calcium( 鈣 ). A ceramic is a hard, strong compound made from clay or minerals. The superconducting ceramic has been fashioned into a tape that is wrapped lengthwis.e around a long tube filled with liquid nitrogen. Liquid nitrogen is supercold and lowers the temperature of the ceramictape to the point where it conveys electricity
with zero resistance.
The United States loses an enormous amount of electricity each year to resistance. Because cooled superconductors have no resistance, they waste much less power. Other cities are watching the Frisbie experiment in the hope that they might switch to superconducting cable and conserve power, too.
is the benefit of the revolution mentioned in the first paragraph?
A. With a flip of swish, electricity can be transmitted.
B. Other American cities can benefit from the high-perfo ——rraance cables.
C. Great amounts of power can be conserved.
D. Detroit will first receive electricity transmitted by the new electrical cables.
ared to common electrical conductors, superconductors
A. have little or no electrical resistance.
B. can be used for a long time.
C. are not energy-efficient.
D. can be made easily.
what temperature does the superconducting ceramic lose its resistance?
A. -143 degree Celsius.
B. -263 degree Celsius.
C. As long as it is ice-cold.
D. Absolute zero.
element enables the ceramic tape to lower its temperature?
A. Copper.
B. Liquid nitrogen.
C. Clay.
D. Calcium.
rding to the last paragraph, which of the following statements is NOT true?
A. Other cities hope they can also conserve power.
B. Other cities hope they can use superconducting cables soon.
C. Superconductors waste less power because of their low resistance.
D. The Fribie experiment is not successful.
答案與解析:
1.c。細節題。題幹:第一段中提及的這場革命的好處是什麼?利用題幹關鍵詞可以定位到第一段的最後一句,儘管A、B、D的內容都在第一段中被提及,但不是這場革命所帶來的主要利益。
2.A。細節題。題幹:與傳統的普通電導體相比,超導體__________。第二段的第二句和第四句提供了明確的答案:超導體幾乎沒有電阻,而普通導體都有一定的電阻。故選A。
3.A。細節題。題幹:在什麼温度下,超導體失去電阻?利用題幹關鍵詞可以定位到第三段最後一句,由該句可知答案為A。B是50年前第一代超導體的温度數。C和D都不是正確的説法。
4.B。細節題。題幹:什麼因素使得ceramic tape能降低温度?利用題幹關鍵詞可以定位到第四段第四句,由該句可知答案為B。A和D中的er和calcium是用來製造超導體的陶瓷材料的成分;C中的clay是陶瓷材料的來源。
5.D。細節題。題幹:根據最後一段所述,下列説法哪一項是不對的?A、B、C三個選項的信息在最後一段中都提到了,只有選項D的意思沒提到,故選D。
-
2016年職稱英語閲讀理解縮短答題時間技巧
閲讀理解的得分直接決定職稱英語考試能否及格,是整個考試備考中最重要的環節。但是這部分題量是比較大的,如果用時過長就會擠佔其他部分的答題時間。這樣對於得分也是不利的。所謂大分要得,小分也要拿。那麼如何能在最短的時間內攻克閲讀理解呢?看本站小編為大家...
-
2017年備考職稱英語《理工A》概括大意真題及答案
概括大意主要考察考生的英語單詞儲匯量。以下是本站小編精心為大家整理的.關於備考2017年職稱英語《理工A》概括大意真題及答案,希望對大家有所幫助!更多內容請關注應屆畢業生網!Geothermal(地熱)Energyeheatnaturallymovesfromhotterregionstocoolerones,thehe...
-
2018年職稱英語考試技巧大綱
職稱英語是目前參與人羣最多的`職業資格考試之一,涉及在職人員職稱晉升、工資評定等切身利益。以下是應屆畢業生網為大家提供的2018年職稱英語考試技巧,希望對大家的考試有所幫助。一、綜合實戰技巧原則:先熟(先做熟悉)先易難(先做容易)先(先做握)二、綜合實戰步...
-
2017年職稱英語詞彙選項考前衝刺題
考試複習的時候需要同學們明確考試重點,將考試基礎知識與重點知識從頭到尾梳理一遍,另外還需要做一些題。以下是小編為大家搜索整理的2017年職稱英語詞彙選項考前衝刺題,希望能給大家帶來幫助!更多精彩內容請及時關注我們應屆畢業生考試網!第1部分:詞彙選項(第1&md...