Scientists cannot foresee the possible effects of GE foods, yet we eat them every day without even knowing it．We already have enough food, so why create more that could be potentially harmful to us, to the Earth and to all wildlife? I think that the benefits are amazing, but until we know for sure how these foods will affect us, they are not worth the risk．

　　According to the passage, traditional breeding is different from genetic engineering

　　because _____.

　　A．traditional breeding changes the genes in the same species

　　B．traditional breeding changes the genes in different species

　　C．traditional breeding takes place within the same species

　　D．traditional breeding is more scientific

　　．"The lack of labeling"

　　in Paragraph 4 indicates ______.

　　A．information concerning gene sources is unavailable to customers

　　B．it is currently possible to find the origins of some allergies

　　C．scientists try to hide potential dangers from customers

　　D．the US government is responsible for GE food

　　3．According to Paragraph 5, GE food is unnecessary because______.

　　A．it won't help solve the problem of hunger in the world

　　B．there are potential dangers in producing GE food

　　C．we're now producing more food than before

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