首页
登录
职称英语
[originaltext] Until recently, a tomato was just a tomato. But now scientist
[originaltext] Until recently, a tomato was just a tomato. But now scientist
游客
2024-02-01
23
管理
问题
Until recently, a tomato was just a tomato. But now scientists have begun to change the genes of plants in biology laboratories. So now it is not as easy to know whether tomatoes you eat are pure tomatoes. That is true with many other vegetables and fruits people could find on the market.
Genetic engineering is the process of taking genes from one plant or animal and putting them into an other plant or animal. Scientists use the process to increase the nutrients a food contains. However, this new genetic engineering technology has raised a lot of questions among people.
[21]The United States Food and Drug Administration (FDA) is responsible for deciding how foods must be described when they are sold to the customers. The FDA says people who buy human foods produced by new kinds of plants must be told if there are any safety problems. It also says people must be told what nutrients the foods contain.
There are, however, times when more information about a new food product would be helpful to certain people. Some foods are not a safety threat, but do bring effects to people in unusual ways. For example, [22]after eating the food, they may develop red spots on their skin in a few hours, or have trouble in breathing or have a sick stomach.
20 In what way might fruits and vegetables nowadays be different from those before?
21 What is the FDA responsible for deciding?
22 What may happen to people after eating certain food?
选项
A、They become more mature in a shorter time.
B、They might be of different genes from their ancestors.
C、They are much more nutritious with better taste.
D、They might take a totally different look than before.
答案
B
解析
短文开篇即介绍现在的西红柿未必是以前人们所食用的西红柿。而很可能是实验室的转基因产品;接着说市面上许多蔬菜水果的情况也是如此。B是对原文change the genes of plants的同义改写,故选B。
转载请注明原文地址:https://tihaiku.com/zcyy/3412998.html
相关试题推荐
[originaltext]Londontaxidriversknowthecapitallikethebackoftheirh
[originaltext]Londontaxidriversknowthecapitallikethebackoftheirh
[originaltext]Londontaxidriversknowthecapitallikethebackoftheirh
[originaltext]InAmerica,self-improvementisanationalpastime.Everyyea
[originaltext]Foxesandfarmershavenevergotonwell.Thesesmalldog-lik
[originaltext]W:TangLin?M:Yes!W:Pleasesitdown.M:Thankyouverymuch.
[originaltext]W:TangLin?M:Yes!W:Pleasesitdown.M:Thankyouverymuch.
[originaltext]W:I’malittleworriedaboutJill.Shehasgotabadcold,yets
[originaltext]W:I’malittleworriedaboutJill.Shehasgotabadcold,yets
[originaltext]W:I’malittleworriedaboutJill.Shehasgotabadcold,yets
随机试题
TheAmericansocietyis______anexceedinglyshakyfoundationofnaturalresour
TheSecurityCouncilisthemostpowerfulbodyintheUN.Itisresponsible
以下()不是公司公开发行债券应当符合的条件。A.具备健全且运行良好的组织机构
关于生活常识,下列说法正确的是:A.夏季洗温水浴可以降温 B.夏季出汗越多,减
国库券发行之后,可以在证券交易所上市交易(买卖)。请根据下表提供的信息回答下述问
内伤发热与外感发热的鉴别点为A.起病缓急 B.病程长短 C.发热高低 D.
利用期货套期保值效果的好坏取决于()的变化。A:凸度B:基点C:久期D:基
某企业有甲、乙、丙、丁四个互相独立的投资方案可供选择,投资的寿命期均为1年,各方
下列收入中,属于施工企业建造合同收入的是()。A.客户已确认的合同变更收入
注册会计师在审计报告中描述关键审计事项时,应当说明的内容有( )。A.注册会计
最新回复
(
0
)