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2011届高考英语第一轮复习提升检测试题25
Ⅰ. 单词拼写
1. A recent a________ by scientists that they have successfully cloned the first human embryo has caused much debate and has shocked many people around the world.
2. Our agency will help you clone your pet. Although it ________ (涉及)some cost on your part, you will definitely agree it’s worth it.
