39.

　　if,表假设关系。

　　40．any表“任何……”

　　3阅读理解

　　阅读下列短文，从每题所给的A、B、C和D项中，选出最佳选项，并在答题卡上将该项涂黑。

　　词数：352 完成时间：7分钟 难度：***

　　It is always hard for a small fish to live in a big pond. Pluto's recent departure from the classical planet family clearly proves that size really matters.

　　Astronomers voted on August 24 to create the first scientific definition of the word "planet ", and Pluto obviously didn't make the cut. It turned out to be only a "dwarf planet (矮行星) ".

　　After weeks of heated debate, over 2, 500 astronomers from 75 countries voted on the definition of a "planet" at a conference of the International Astronomical Union ( IAU ). According to the definition, a planet must have a clear neighbourhood around its orbit. Pluto has widely been considered a planet since its discovery in 1930. Unfortunately, it has

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