Question

4．On a clear night，the sky is a wonderful thing．Is there life out there somewhere？Is there another place like Earth where life might exist？If so，where is it？And how far away is it？
  Recently，the American Kepler spacecraft found"22b"，a planet about six hundred light years away．It is the first planet in a"habitable zone"outside the solar system．That means the planet orbits a star like our Sun，but it is not too close to it，nor too far away．Because of this position，scientists say Kepler22b might have water，one of the main things needed for life．
  The newly-discovered planet is about two and a half times larger than the Earth．It is closer to its star than we are to the Sun，but 22b's sun is smaller than ours，and doesn't produce as much heat．Scientific instruments show the new planet could be made of gases，rocks or some kinds of liquids．
  The Kepler spacecraft was named in honor of Johannes Kepler，the seventeenth century German astronomer．It was designed to examine a small part of the Milky Way galaxy and search for places like the Earth．It was made to inspect over 150，000 stars and measure how bright they are．
    If a planet passes between Kepler and the star，it blocks out part of the light．That is what suggested to scientists that there is at least one planet orbiting the star．The instruments on Kepler show the new planet as a small，black dot moving across its sun．An important part of the Kepler experiment is on the Earth．After the spacecraft gathers information，scientists use the space telescopes on the ground．
  Scientists have found over 2，300 new planets since Kepler was launched．About 200 of these are about the size of the Earth．Most are much larger，but it is the new planet's length from its star that is important．For life to possibly exist there，the planet's temperature must not be too hot or too cold．
29．What can we learn about Kepler-22b？D
A．Water must have existed on it．
B．It takes humans about 600 years to get there．
C．It is made of gases，rocks and many kinds of liquids．
D．It is the first planet outside the solar system where life may survive．
30．The Kepler spacecraft was sent into space toB．
A．show honor to Johannes Kepler
B．look for Earth-like planets in the sky
C．observe the changes of a star's brightness
D．measure the brightest star among 150，000 stars
31．In Paragraph 5 the author mainly tells usA．
A．how the Kepler system works
B．if the Kepler system sees a new planet
C．how the Kepler system uses the space telescopes
D．why an important part of the Kepler system remains on the Earth
32．What can we infer from the passage？D
A．Life may exist on the new planet in another form．
B．It is colder on the new planet because its sun is smaller．
C．Life can't exist on planets which are much larger than the Earth．
D．The new planet's length from its star decides on the possibility of life existence．

Answer 1

分析 本文屬于說(shuō)明文閱讀，作者通過(guò)這篇文章主要向我們描述了和地球相像的行星 Kepler-22b可能適合人類生存的推測(cè)．

解答 29．D．推理判斷題．根據(jù)第二段Because of this position，Kepler-22b might have water，one of the main things needed for life．可知這個(gè)星球上由生命所需的東西，所以可以推理出我們能在上面生活，故選D．
30．B．細(xì)節(jié)理解題．根據(jù)第四段It was designed to examine a small part of the Milky Way galaxy（星系）and search for places like the Earth可知它是為了檢測(cè)像地球一樣的星球，故選B．
31．A．細(xì)節(jié)理解題． 根據(jù)倒數(shù)第二段The instruments on Kepler show the new planet as a small，black dot moving across its sun．可知這是講述了行星是怎樣工作的，故選A．
32．D．推理判斷題．根據(jù)最后一段Most are much larger，but it is the new planet's length from its star that is important．For life to possibly exist there，the planet's temperature must not be too hot or too cold可推知新行星距離太陽(yáng)的遠(yuǎn)近決定了存在生命的可能性；故選D．

點(diǎn)評(píng) 考察學(xué)生的細(xì)節(jié)理解和推理判斷能力，做細(xì)節(jié)理解題時(shí)一定要找到文章中的原句，和題干進(jìn)行比較，再做出正確的選擇．在做推理判斷題不要以個(gè)人的主觀想象代替文章的事實(shí)，要根據(jù)文章事實(shí)進(jìn)行合乎邏輯的推理判斷．