Muller believed that ______.
A. the star orbits around the sun
B. the star is disturbed by the Oort Cloud
C. the star is throwing comets into the Oort Cloud
D. the star is responsible for extinction of life on the Earth
查看答案
A suitable title for the passage could be
A. Brown Dwarf Orbits around the Earth
B. Sun's Hidden Twin Stalks Earth
C. Oort Cloud and Comet Shower
D. Star, Planet and Dwarf
It can be inferred from the passage that young people who come to Stratford ______.
A. contribute a lot to the local revenue
B. are all weird
C. have similar backgrounds
D. are there for the same reason
The word "admonition" in paragraph 4 means ______.
A. hint
B. interpretation
C. examination
D. warning
What does the passage imply about a brown dwarf？
A. It's bright.
B. It's of medium size.
C. It's not a planet.
D. It's big.
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