楊鳳芝英語基礎(chǔ)訓(xùn)練五_跨考網(wǎng)

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  楊鳳芝英語基礎(chǔ)訓(xùn)練八 ? ?? 楊鳳芝英語基礎(chǔ)訓(xùn)練九?????? 楊鳳芝英語基礎(chǔ)訓(xùn)練十

  楊鳳芝英語基礎(chǔ)訓(xùn)練十一??? 楊鳳芝英語基礎(chǔ)訓(xùn)練十二

楊鳳芝英語基礎(chǔ)訓(xùn)練五

  Unit five

  Text 1

  In May 1989, space shuttle “Atlantis” released in outer space the space probe “Megallan,” which is now on her 15-month and one-billion-kilometer flight to Venus. A new phase in space exploration has begun.

  The planet Venus is only slightly smaller than Earth; it is the only other object in the solar system, in fact, that even comes close to earth’s size. Venus has a similar density, so it is probably made of approximately the same stuff, and it has an atmosphere, complete with clouds. It is also the closest planet to earth, and thus the most similar in distance from the sun. In short, Venus seems to justify its long-held nickname of “earth’s twin.”

  The surface temperature of Venus reaches some 900F. Added to that is an atmospheric pressure about 90 times Earth’s: High overhead in the carbon dioxide (CO2) that passes for air is a layer of clouds, perhaps 10 to 20 miles thick, whose little drops consist mostly of sulfuric acid (H2SO4). Water is all but nonexistent.

  Born with so many fundamental similarities to earth, how did Venus get to be so radically different: It is not just an academic matter. For all its extremes, Venus is a valuable laboratory for researchers studying the weather and climate of earth. It has no earth’s oceans, so the heat transport and other mechanisms are greatly simplified. In addition, the planet Venus takes 243 earth-days to turn once on its axis, so incoming heat from the sun is added and distributed at a more leisurely, observable pace.

  16. Venus is similar to Earth in ________.

  [A] size and density

  [B] distance from the sun

  [C] having atmosphere(D)

  [D] all of the above

  17. The greatest value in studying Venus should be to ________.

  [A] allow us to visit there

  [B] understand Earth better

  [C] find a new source of energy(B)

  [D] promote a new space program

  18. The main idea of this passage is about ________.

  [A] problems of space travel

  [B] scientific methods in space exploration

  [C] the importance of Venus to Earth(C)

  [D] conditions on Venus

跨考考研課程

班型 定向班型 開班時間 高定班 標準班 課程介紹 咨詢
秋季集訓(xùn) 沖刺班 9.10-12.20 168000 24800起 小班面授+專業(yè)課1對1+專業(yè)課定向輔導(dǎo)+協(xié)議加強課程(高定班)+專屬規(guī)劃答疑(高定班)+精細化答疑+復(fù)試資源(高定班)+復(fù)試課包(高定班)+復(fù)試指導(dǎo)(高定班)+復(fù)試班主任1v1服務(wù)(高定班)+復(fù)試面授密訓(xùn)(高定班)+復(fù)試1v1(高定班)
2023集訓(xùn)暢學(xué) 非定向(政英班/數(shù)政英班) 每月20日 22800起(協(xié)議班) 13800起 先行階在線課程+基礎(chǔ)階在線課程+強化階在線課程+真題階在線課程+沖刺階在線課程+專業(yè)課針對性一對一課程+班主任全程督學(xué)服務(wù)+全程規(guī)劃體系+全程測試體系+全程精細化答疑+擇校擇專業(yè)能力定位體系+全年關(guān)鍵環(huán)節(jié)指導(dǎo)體系+初試加強課+初試專屬服務(wù)+復(fù)試全科標準班服務(wù)

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