评论
打印
听力对话试题
Questions 23 to 25 are based on theconversation you have just heard.
23.
[A] The possible existence of life on otherplanets.
[B] Methods for building powerful newtelescopes.
[C] A technical problem that astronomerscan’t solve.
[D] The discovery of planets orbitingdistant stars.
24.
[A] They studied variations in theappearance of the parent stars.
[B] They were able to see the planets witha telescope.
[C] They compared the parent stars to theSun.
[D] They sent astronauts on a mission intospace.
25.
[A] Their surface features.
[B] Their chemical composition.
[C] Their temperature.
[D]Their age.
