[B] the sizes of the plants are too huge.
[C] astronomers have never seen similar orbiting pattern and size before
[D] scientists can not figure out what they can be
3. By saying that our solar system may be a cosmic oddball, the author intends to render
the idea that ______________.
[A] other stars have planets more or less like the one going around the sun
[B] the orbits of extrasolar planets around their stars are elongated ones
[C] the way planets orbiting around the sun in our solar system is quite unique
[D] planets in other systems are generally huger than the ones in ours
4. The case of the giant heavenly body demonstrates that _________.
[A] conventional theory can not explain such astronomical phenomenon satisfactorily
[B] it is either a star or a planet
[C] it was formed like a star and orbits like a planet
[D] theorists give a wrong definition of planet
5. The best title for this passage could be ___________.
[A] New Planetary Puzzlers
[B] Two Remarkable Finds
[C] A Redefinition of Planet
[D] Hot Jupiters Challenging Conventional Theory
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