2014年4月22日是第45个“世界地球日”。当日，联合国环境规划署将中国库布其沙漠生态治理区确立为全球沙漠“生态经济示范区”，并作为全球首个荒漠化地区生态系统的研究对象，进行科学评估。这表明(    )

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    Articles Wanted

    School Life

    Articles should be typewritten and double spaced, using only one side of the page.

    Your name, year of birth, school name (and English teacher), home address and e-mail address must be included.

    For photos, place the information on the back of each envelope: PLEASE DON'T FOLD.

    Please keep copies of your text, pictures or photos.

    The sentence MUST BE WRITTEN with your name on each work, "I promise the above work is completely original (原创的)."

    If your article is chosen, you will receive a copy of School Life and a special gift.

    SEND IT ALL SUMMER!

    For more information, please contact (联系) us!

    Tel: (0417) 381361 (0417) 386743

    E-mail: schoollife@acpmagazines.com.

    Mail: School Life. Box 5252, Yingkou, NSW 200

Drivers should drive           when they are passing by a school.