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  3. For decades, posters depicting rabbits with inflamed, reddened eyes symbolized campaigns against the testing of cosmetics on ani

For decades, posters depicting rabbits with inflamed, reddened eyes symbolized campaigns against the testing of cosmetics on ani

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问题     For decades, posters depicting rabbits with inflamed, reddened eyes symbolized campaigns against the testing of cosmetics on animals. Now the most severe of those【C1】______are to be banned across the European Union.
    The so-called Draize tests are a series of notorious procedures【C2】______involve applying cosmetics ingredients【C3】______the eyes and skin of live laboratory rabbits. The animals’ reactions are【C4】______to assess whether the【C5】______is an irritant or not. However, on April 27 the independent scientific advisory committee of the European Center for the Validation of Alternative Methods(ECVAM)approved a series of humane【C6】______.
    Two of these alternative tests use waste animal tissue reclaimed from slaughterhouses to replace live animals and test【C7】______ chemicals might severely irritate the eyes. Two more will 【C8】______live animals with in vitro cell cultures for determining whether【C9】______irritate the skin. A fifth alterative test, 【C10】______identify whether chemicals will cause skin allergies , will spare hundreds of thousands of mice a year.
    These humane alternatives have been available【C11】______commercial use for years, but to enforce their use, ECVAM has had to show they are as【C12】______as or better than the procedures on live animals they are to replace. Now【C13】______the committee has validated the alternatives, 【C14】______ will become illegal under the European Cosmetics Directive【C15】______cosmetic companies to continue to use live animals, and regulatory authorities in 【C16】______member state will be forced to outlaw their use.
    【C17】______these changes, cosmetics companies will still be allowed to【C18】______relatively mild chemicals on the eyes of live animals until further alternative tests are approved, or until 2009, 【C19】______most cosmetic tests on live animals will be banned in Europe, regardless of【C20】______alternatives have been approved or not.
【C13】
选项
答案that
解析 本句意为“既然委员会已批准了替代实验…”。“now that”是固定搭配，意为“既然”，所以此空应填“that”。
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