问题 单项选择题

阅读以下文字,完成以下问题。
通过生物技术,科学家可以把某个基因从生物中分离出来,然后植入另一种生物体内。例如,北极鱼体内的某个基因有防冻作用,科学家将它抽出,植入西红柿里,于是就制造出新品种的耐寒西红柿。像这样含有转基因成分的食品就是转基因食品。1983年,世界上第一例转基因植物(转基因烟草)在美国成功培植。迄今为止,转基因牛羊、鱼虾、粮食、蔬菜、水果在国际上均有培育并已投入市场。
基于转基因食品潜在安全的不确定性,世界各国政府都加强对转基因食品进行管理。主要原则是:一、执行严格的安全评价制度;二、标识制度,即在转基因食品包装上加贴标识。目前我国转基因食品法规主要有:《农业转基因生物安全管理条例》,2001年5月9日实施。《农业转基因生物安全评估管理办法》,2002年3月20日起实施,第一次将转基因从低到高分为4个等级。(农业转基因生物进口安全管理办法》,2002年3月20日起实施。《农业转基因生物标识管理办法》,2002年3月20日起实施,规定对转基因产品实施标识制度。第一批标识管理的转基因生物目录是:大豆种子、大豆、大豆粉、大豆油、豆粕、玉米种子、玉米、玉米油、玉米粉、油菜种子、油菜籽、油菜籽油、油菜籽粕、棉花种子、番茄种子、鲜番茄、番茄酱。《转基因食品卫生管理办法》,2002年4月8日颁布,7月1日起实施。《进出境转基因产品检验检疫管理办法》,2004年6月12日颁布。
据有关专家分析,北极鱼体内的某个基因有防冻作用,科学家将它抽出,植入西红柿里,于是就制造出新品种的耐寒西红柿,出口价值约为120亿美元;如果再将用转基因产品喂养的牲畜也计算在内的话,其出口价值至少会翻一番。仅去年一年,中国进口的转基因大豆就超过了 1500万吨。对美国的转基因作物生产者来说,他们确实抱住了一只下金蛋的鸡。我国市场目前主要的转基因作物都源自进口,主要集中在大豆、油菜、玉米等产品。大量进口的大豆经过加工,被制成了食用油、豆腐和豆奶等产品。
也就是说,近年来,我们吃的大部分豆制品都是转基因产品。那么,强制性的标签制度就是必要的。因为这是对消费者最起码的一个尊重——他们有知情权,他们也有选择权,他们应该自己来决定吃还是不吃,谁也不能剥夺他们的这种权利。
一些负责任的科学家给出了这样的建议:到目前为止,转基因食品是安全的,没有任何证据能够证明它会给人类带来伤害;但是,体弱多病者、老人以及孩子最好尽量不吃这种食品。
2003年7月1日,我国卫生部开始实施《转基因食品卫生管理办法》,规定转基因食品必须贴上特定标志,以尊重消费者的知情权和选择权。北京市农业局随后对北京市场上14家企业共22种豆类产品进行了监督抽查,结果表明,22种产品全部为转基因产品,却都没有明确标识。
7月9日,联合国粮农组织和世界卫生组织所属的国际食品规范委员会联合宣布,通过了一个关于如何评估借助生物工艺学生产食品的法规,其中包括转基因食品风险问题这一划时代的协议,50多项新的食品安全和质量标准获得通过。
7月22日,欧盟通过了关于转基因产品的新法规,被封禁了5年之久的欧洲市场又将开始为转基因产品打开大门。
8月6日,美国农业部出台一项新规定,要求加强对经过基因改造后供造纸业、清洁剂制造业等工业用基因农作物的管理。按照新规定,企业[ ]提出申请并得到政府批准,才能进行工业用基因工程作物的实验种植。
10年前距人们还极其遥远的转基因食品,今天,已经悄然无息地走进了我们的厨房,摆上了我们的餐桌。

根据第三段内容下列说法错误的一项是( )。

A.转基因食品给美国带来了巨大的经济收益

B.转基因食品在美国农业和食品出口中占很大比例

C.我国市场目前主要的转基因作物都源自进口

D.美国生产的转基因食品主要集中在大豆、油菜、玉米等产品

答案

参考答案:D

解析:解析:第三段提到我国目前进口的转基因食品主要集中在大豆、油菜、玉米等产品,并没有说美国的生产也集中在这些产品。

阅读理解

Imagine being able to recall just about anything, your mind functioning as a nearly endless encyclopedic(百科全书的)book of names, pictures, dates and events.

Brad Williams’ excellent memory recall makes him a personified version(个人版)of Google. His wide memory allows him to recall almost any news event and anything he has experienced, including specific dates and even the weather. “I was sort of a human Google for my family. I’ve always been able to recall things,” the 51-yearold said on Good Morning America in his first television interview.

Williams’ type of detailed, complete memory is called hyperthymesia and few known cases exist. Brad’s brain scan are now being studied by scientists at the Center for Neurobiology(神经生物学)of Learning and Memory, at the University of California.

At first, the drive-time radio broadcaster didn’t think his ability to recall so much was anything special. Gradually, over the years, other people noticed how much he was able to remember in detail about events. Then in 2006, he read an article about a wman whom scietists called AJ, which prompted Williams to come forward. AJ is a writwer of a medical journal, and the only scientifically-documented case of superior memory.

“When I read about AJ, my immediate thought was : Oh my God. That’s Brad!” said williams’ brother, Eric Williams.

Eric Williams is eager to learn about the inner working of his brother’s mind. He is in the process of making documentary(纪录片)about Brad, appropriately titled: “Unforgettable.” In the film, which hasn’t been finished yet, Williams takes on a person who is Googling answers to 20 questions. He answers 18 of them correctly and is 11 minutes faster than the Google user.

“All of us have the ability to store this information, but the difference with Brad is that he can recall it,” Eric Williams said.

小题1:According to the passage, which of the following is true about Brad Williams?

A.He has worked for Google, so he recall any news events.

B.He may be one of the rare cases of people with a superior memory.

C.He is now the host of Good Morning America.

D.He is working as a teacher in California.小题2:Why does Brad Williams have such a good memory?

A.Because he was born with a rare ability.

B.Because his work requires a good memory.

C.Because he has to answer others’ questions.

D.Because he was specially trained in his chilhood.小题3:The underlined word “prompted” most probably means _______.

A.helped

B.wanted

C.warned

D.encouraged小题4:The best title for this passage might be ___________.

A.The Ability to Store All Information

B.A Documentary called Unforgettable

C.“Google Man” Recalls Nearly Every Thing

D.Brad Williams and Google User

单项选择题 B1型题