北京農(nóng)大附中unit21humanbiology(專業(yè)版)
【正文】 2 and find out: 1. What reasons made athletes’ performances improve? 2. How are their performances recently? It is due to better equipment, training and diet. Recently, athletes’ improvements have begun to slow down. Detailed reading Doping In order to enhance their performances, they use Genetherapy Doping are originally developed to But in the wrong hands, doping creates , It also causes those who them. The sports world doesn’t doping as it is a form of Doping affects both athletics and 7. ___________. It’s not easy to catch using illegal drugs because： ’s__________for winners to be tested. developed all the time. tests are_________ _________________ Read and fill in the blanks supreme athletes serious health problems help people with illness tolerate cheating pulsory New drugs one step behind every sport use attitude result/effect trouble abuse Gene therapy Read and find Read Para. 7 and find out some information about gene therapy. use attitude possible result possible trouble It is to _____________ and _______________ by changing genes. Many
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