单项选择题

What does the article mainly want to tell us

A．History of skating.
B．Development of skating.
C．Skating tendencies.
D．Skating.

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热门试题

单项选择题Who was the first skater to successfully complete a double axel and a triple jump in competition

A．American athlete Jackson Haines.
B．Norway's Sonja Henie.
C．American skater Dick Button.
D．Dutch skater Jaap Eden.

单项选择题From the passage we can infer that _____.

A．many people have dedicated to the skating
B．modem speed skating will become more and more quick.
C．figure skating will be further innovated and improved.
D．more and more people like skating now.

单项选择题An international team of astronomers has discovered 11 new planets outside the solar system, raising fresh ______ about the possibility of life in outer space.

A．exploring
B．debate
C．wondering
D．pondering

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

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.