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    . For breakfast he only drinks juice from fresh fruit ________ on his own farm.

    A. grown B. being grown

    C. to be grown       D. to grow

    A


    解析:

    A。由于名词fresh fruit与动词grow之间为被动关系，所以首先可排除选项D。而B和C虽然可以表示被动，但与句意不吻合，因为being grown表示一个正在进行的被动动作，to be grown表示一个尚未发生的被动动作，均不合题意。

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    site in San Timoteo Canyon (峡谷) when they unearthed hundreds of ancient animal fossils. Researchers say
    the bones hold important clues about the history of the region.
         Nearly 1, 500 fossils were recovered from the dusty canyon. The remains are about 1.4 million years old.
    They include the bones of a new species of deer, several small rodents (啮齿目动物) and more. A giant cat
    fossil was also found. Scientists believe the animal was an ancestor of the saber- toothed tiger. Signs of plant
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         "This is a huge find," says Rick Greenwood, a scientist studying the site. "I don't think most people had
    any idea that those types of animals were wandering around here more than a million years ago."
         San Timoteo Canyon is located about 85 miles from Los Angeles. The area of the canyon where the fossils
    were found was once part of a green river valley. Today, the region is dry and plant life is rare.
         Most of the fossils are well preserved. Experts say a muddy lake bed may have trapped thirty animals that
    wandered over for a drink. The mud helped to protect the animal fossils.
         The remains are a million years older than those discovered at the famous La Brea Tar Pits in Los Angeles.
    Scientists studying the bones will be able to learn more about how the animals adapted to changes in the
    environment.
         "We have a confused view of what this time period was like," says another scientist. "A discovery like this
    could really be an important contribution."
         About 35 different animal species are represented in the fossil collection. Scientists began removing bones
    from the site last fall. The project was completed this summer. Starting next year, the fossils will be on display
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