零五网 全部参考答案 随堂反馈 2026年综合素质随堂反馈九年级英语下册译林版无锡专版 第95页解析答案
五、阅读理解
Biotech foods (转基因食品) are produced from animals and plants that have been made genetically different. Genetic alteration (基因改变) is nothing new. Humans have been changing the genetic features of plants for thousands of years by keeping seeds from the best crops and planting them the following years, and by breeding (培育) different kinds to make them taste sweeter,grow bigger,or last longer.
Traditional farmers always used plants or animals that were related (相关的),or genetically similar. However,today's genetic engineers can change just a few genes at a time between species (物种) that are hardly related,or not related at all. There are surprising examples: Mouse genes are put into vegetable plants to make them produce more Vitamin C. Moth (飞蛾) genes are put into apple trees to help them from being harmed by diseases. Anyway,the purpose of traditional and modern ones is the same to add genes from an animal or a plant to make another grow better.
Q:
?
According to a report from the National Academy of Sciences,"Nothing can prove that these genetic foods (GE foods) are harmful to people." Some GE foods might even be safer than non-GE foods.
However,many people fear that when moving genes across completely different species,something could go wrong,with the possibility of unexpected health risk.
Q: Can biotech foods help feed the world?
According to the WHO,between 250,000 and 500,000 kids go blind every year in short of Vitamin A,with half of those children dying of losing their sight. "Golden rice"—a biotech variety named for its yellow colour—is thought to be a possible solution to the illness caused by Vitamin A shortage.
Other experts,however,hold the opposite opinion. "Golden rice alone won't greatly reduce Vitamin A shortage," says Professor Nestle of New York University. "Whether it will improve Vitamin A levels remains to be seen."
Q: What's next?
Whether biotech foods will help solve world hunger or improve our lives remains to be seen. Their possibility is large,yet they carry risks. If science goes on with great care,testing new products completely and using dependable judgment (鉴定),the world may avoid the dangers of genetic alteration while enjoying its advantages.
(
B
)1. Traditional farmers bred an animal or a plant by
.
A. keeping the gene of the same plant each year
B. using some related plants or animals to breed
C. creating an animal or plant with special features
D. changing a few genes at a time from one plant to another
(
C
)2. What can be put in the
?
A. What exactly are biotech foods
B. How to add genes into biotech foods
C. Are biotech foods really safe for humans
D. Can biotech foods harm the environment
(
A
)3. The main idea of the last paragraph is
.
A. with care,the safe use of biotech foods could possibly be realized
B. the world has already seen great progress thanks to biotech foods
C. biotech food development has been slowed by many risks
D. the risks of biotech foods seem to be greater than any possible advantage
(
A
)4. What's the best title for the passage?
A. Biotech Foods,Good or Bad?
B. Dangerous Biotech Foods
C. Plants and Animals
D. The Past of Biotech foods
答案:1-4 BCAA
解析:
翻译:
### 五、阅读理解
转基因食品是由基因经过改造的动植物生产而来的。基因改变并不是什么新鲜事。几千年来,人类一直通过保留最好的农作物的种子并在来年种植,以及培育不同的品种以使其味道更甜、长得更大或保存更久,来改变植物的基因特征。
传统农民总是使用有亲缘关系或基因相似的动植物(进行培育)。然而,如今的基因工程师一次可以在几乎没有亲缘关系或完全没有亲缘关系的物种之间改变几个基因。有一些令人惊讶的例子:老鼠的基因被植入蔬菜植株中,以使它们产生更多的维生素C。飞蛾的基因被植入苹果树中,以帮助它们免受疾病的侵害。无论如何,传统和现代(培育方式)的目的是相同的——添加一种动物或植物的基因,以使另一种(动植物)生长得更好。
问题:____▲____?
根据美国国家科学院的一份报告,“没有什么能证明这些转基因食品对人类有害。”一些转基因食品甚至可能比非转基因食品更安全。
然而,许多人担心,当在完全不同的物种之间转移基因时,可能会出现问题,有可能带来意想不到的健康风险。
问题:转基因食品能养活世界吗?
根据世界卫生组织的数据,每年有25万至50万儿童因缺乏维生素A而失明,其中一半的儿童会因失明而死亡。“黄金大米”——一种因其黄色而得名的转基因品种——被认为是解决维生素A缺乏症的一种可能的方法。
然而,其他专家则持相反意见。“仅靠黄金大米并不能大大减少维生素A缺乏的情况,”纽约大学的内斯特教授说。“它是否会提高维生素A水平还有待观察。”
问题:接下来会怎样?
转基因食品是否会有助于解决世界饥饿问题或改善我们的生活还有待观察。它们的可能性很大,但也存在风险。如果科学研究继续非常谨慎地进行,对新产品进行全面测试并使用可靠的鉴定(方法),那么世界可能在享受基因改变的优势的同时避免其带来的危险。
(B)1. 传统农民通过______来培育一种动物或植物。
A. 每年保留同一种植物的基因
B. 使用一些有亲缘关系的动植物来培育
C. 创造一种具有特殊特征的动物或植物
D. 一次从一种植物向另一种植物改变几个基因
(C)2. ____▲____处可以填什么?
A. 转基因食品到底是什么
B. 如何将基因添加到转基因食品中
C. 转基因食品对人类真的安全吗
D. 转基因食品会危害环境吗
(A)3. 最后一段的主要意思是______。
A. 只要谨慎行事,转基因食品的安全使用就有可能实现
B. 由于转基因食品,世界已经取得了巨大的进步
C. 许多风险减缓了转基因食品的发展
D. 转基因食品的风险似乎比任何可能的优势都大
(A)4. 这篇文章的最佳标题是什么?
A. 转基因食品,好还是坏?
B. 危险的转基因食品
C. 植物和动物
D. 转基因食品的过去
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