l led the research by the University of Oxford in Kenya Р"It's a genetic disorder and if you (41)______one copy of the gene from one of your parents, you don't have any symptoms and you're called a (42)______or a heterozygote individual． If you inherit two copies from your parents, then you have sickle cell anemia, which is quite(43)______and lethal in countries where there is no treatment (44) ______," he said РIt was initially limited to malaria endemic areas, but because of population (45) ______it's now common in many other parts of the world So this is clearly a global burden and it's going to increase．РР 第2页 /总页数 3 页Р A．accountedРB．inheritРC．severalРD．availableРE．enlargementРF．transportРG．experimentРH．carderРI．sufferingРJ．sendРK．injectionРL．possibleРM．movementРN．especiallyРO．severe
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