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　　neighbours had maintained distant but real connections ever before 1500 B. C.

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　　12. It soon became obviously that instead of being trained to sing she would be trained as the as-

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　　tronomer`s assistant .

　　13. He also conceived that the solar system and the universe would come into existence by a nat-

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　　ural process and would disappear one day.

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　　14. The moon has a mass that is nearly one hundred times less than the earth ; in consequence ,

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　　the force of gravity at the moon` s surface is only one-sixth of that at the earth`s surface.

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　　15 . "The Bunsen burner is so named because it is thought to be invented by Robert Bunsen, who

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　　was Genman by birth.

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　　16. Much although I have traveled, I have never seen anyone to equal her in thoroughness,

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　　whatever the job.

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　　17. The weeds and tall grass in that yard makes the house look as if it had been vacant for quite

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