单项选择题

It can be inferred from the text that______.

A．discoveries of new planets set scientists thinking
B．extrasolar planets exist in the universe
C．solar system should be re-examined by mankind
D．new discovery depends on new theory

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单项选择题Which of the following is NOT TRUE

A．None of the extra-solar planets has been seen without telescopes and they are detected directly by the effects of gravity on the motions of their mother star.
B．Calculations of the changes in motion of these stars allow astronomers to draw conclusions on the orbit of the planets, their mass and their distance from the central stars,
C．Each discovery raises new questions about the formation and behavior of planets among scientists.
D．A major problem affecting observation using current telescope technology is that light shining from the stars tends drown all weaker sources of light in the vicinity.

单项选择题According to the passage, the ancestor of the I , Somerville ______.

A．had a pure blood son
B．was educated
C．was an ambitious woman
D．had never been emancipated

单项选择题Among the following conclusion drawn from the passage, which of them is NOT true

A．The narrator, "T" is with mixed blood.
B．"My" great-grandfather was worshiped as a self-made man.
C．"My" family suffered a lot in the time of Ku Klux Klan.
D．John Wesley attributed his success to his great mother.

单项选择题The word business occurs twice in the first paragraph, what does the second business mean

A．Trade.
B．Affair.
C．Duty.
D．Right.

单项选择题In the author's opinion ______.

A．American young couples have no chance to show their individualism in their marriage
B．American young couples don't like to following long-held traditions
C．American young couples are inclined to follow the marriage traditions
D．American young couples marry in their own way