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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 animal’s, 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.
【C2】
选项
答案that
解析 空缺处所在句句意：所谓的Draize试验指的是一系列臭名昭著的实验程序，这些实验主要是在实验室里的活体兔子的眼睛和皮肤上实验某种化妆品成分。根据语法，“involve applying cosmetics ingredients…”是定语从句，修饰“a series of notorious procedures”，所以此空应填定语从句引导词“that”。另外，此空也可填“which”。
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