What is the passage mainly about?
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1 .Paragraph 5 _____.
A The Center of Our Solar System. B A Major Achievement of Finding New Planets in Space C Great Challenge Faced by Astronomy in 21st Century D Telescope Capable of Detecting Life E Limitation of Using the Earth-based Telescopes F The Condition on Which a Planet Can Support Life
2 .Planets in solar systems are so much more difficult to detect than stars because of _____.
A a moderate temperature B on the edge of our solar system C affected by dust D the limitation of earth-based telescopes E their small size and no light emission F does not exist
3 .The kind of planet, which has _____, might be able to support life.
A a moderate temperature B on the edge of our solar system C affected by dust D the limitation of earth-based telescopes E their small size and no light emission F does not exist
4 .A telescope capable of finding life on other planets would have to far enough from the center of our solar system and be not ____.
A a moderate temperature B on the edge of our solar system C affected by dust D the limitation of earth-based telescopes E their small size and no light emission F does not exist
5 .At present, the telescope that is capable of detecting life _____.
A a moderate temperature B on the edge of our solar system C affected by dust D the limitation of earth-based telescopes E their small size and no light emission F does not exist
7 .The aim of the experiment carried out in Belgium is ____.
A to make the robots be cousins with the biological roaches. B to get the robotic and biological roaches to cooperate on common task. C to figure out how individual's behavior leads to a collective decision. D to make the robots look and smell like the real ones.
8 .What does the word "emit" (L4, P1) probably mean?
A give out B turn out C figure out D send out
9 .What did the real cockroaches do when the robot-roaches made an inappropriate decision?
A Some of them headed toward the dark areas. B Many followed the collective to a lighter shelter. C All of them followed the collective to a lighter shelter. D Most of them stayed still.
10 .What can we learn about the feature of the robot-roaches?
A They look much like the real roaches. B The programming of them will never be overridden by the real roaches. C They can behave like the natural cockroaches. D They can emit the same molecules that roaches use to identify their kin.
