题目内容
Listen to the passage and fill in the blanks. Human cloning is the_____1___of a genetically identical copy of an existing or previously existing human. The term is generally used to refer to_______2_____human cloning. There are two commonly____3__types of human cloning: therapeutic cloning and reproductive cloning. Therapeutic cloning involves cloning adult cells for use in_____4__and is an active area of research. Reproductive cloning would involve making cloned humans. A third type of cloning called replacement cloning is a_____5____possibility, and would be a_____6____of therapeutic and reproductive cloning. Replacement cloning would entail the replacement of an extensively damaged, failed, or failing body through cloning followed by whole or partial brain transplant._______________7________________. There have been numerous demands for all progress in the human cloning field to be stopped..____________________8___________________oppose reproductive cloning. The American Association for the Advancement of Science (AAAS) and other scientific organizations have made public statements suggesting that__________________9___________until safety issues are resolved.
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