2021版高考英语一轮巩固达标练Unit3Traveljournal(含解析)新人教版必修1
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1 / 8 2021版高考英语一轮巩固达标练Unit3Traveljournal（含解析）新人教版必修1
李仕才
***阅读明白得
Nowadays more and more people are talking about genetically modified foods ( GM
foods). GM foods develop from genetically modified organisms (有机体), which have had
specific changes introduced into their DNA by genetic engineering techniques. These
techniques are much more precise where an organism is exposed to chemicals to create
a nonspecific but stable change. For many people, the hightech production raises all
kinds of environmental, ethical, health and safety problems. Particularly in countries
with long farming traditions, the idea seems against nature.
In fact, GM foods are already very much a part of our lives. They were first put
on the market in 1996. A third of the corn and more than half the cotton grown in the
U. S. last year was the product of biotechnology, according to the Department of
Agriculture. More than 65 million acres of genetically modified crops will be planted
in the US this year. The genetic genie is out of the bottle.
However, like any new product entering the food chain, GM foods must be subjected
to careful testing. In wealthy countries, the debate about biotech is not so fierce
by the fact that they have a large number of foods to choose from, and a supply that
goes beyond the needs. In developing countries desperate to feed fastgrowing and
underfed populations, the matter is simpler and much more urgent: do the benefits of
biotech outweigh the risks?
The statistics on population growth and hunger are disturbing. Last year the
world's population reached 6 billion. The UN states that nearly 800 million people
around the world are unhealthy. About 400 million women of childbearing age don' t
have enough iron, which means their babies are exposed to various birth many as 100
million children suffer from vitamin A deficiency, a leading cause of blindness.
How can biotech help? Genetic engineering is widely used to produce plants and
animals with better nutritional values. Biotechnologists have developed genetically 2 / 8 modified rice and they are working on other kinds of nutritionally improved crops.
Biotech can also improve farming productivity in places where food shortages are caused
by crop damage attributable to drought, poor soil and crop viruses.
passage mainly talks about________.
A. the world's food problem B. the development in biotech
C. the genetically modified foods D. the way to solve food shortages
to the passage, GM foods________.
A. will replace naturally grown foods
B. are far better than naturally grown foods
C. may help to solve the problem of poor nutrition
D. can cause serious trouble in developing countries
underlined sentence “The genetic genie is out of the bottle.” in Paragraph 2
probably
means that________.
foods are available everywhere
B. the technology in producing GM foods is advanced
C. genetic technology may have uncontrollable powers
D. genetic technology has come out of laboratories into markets
's the writer's attitude towards GM foods?
A. Enthusiastic. B. Cautious.
C. Disapproving. D. Unbelievable.
【文章大意】本文是一篇说明文，要紧介绍了转基因食品及其对人类生活的阻碍。
【解析】主旨大意题。依照文章内容，专门是第一段中的“Nowadays more and more people
are talking about genetically modified foods ( GM foods).”可知，本文要紧介绍的是转基因食品。
【解析】细节明白得题。依照最后一段中的“Genetic engineering is widely used to produce
plants and animals with better nutritional values.”可知，转基因食品有助于解决营养不良问题。 3 / 8
【解析】观点态度题。依照第三段中的“However, like any new product entering the food
chain, GM foods must be subjected to careful testing.”可知，作者认为转基因食品进入市场前需要严格的检测，由此可见作者对转基因食品的态度是慎重的。
***语法填空
Over the years, I have met some interesting people. Two of __1__ most
interesting
people were two elderly sisters, Joan and Bernice, __2__ way of talking about people
inspired me.
It was always a __3__ (pleasant) to visit these two sisters. Just being
greeted
at the door was a joy. They couldn't be __4__ (happy) when seeing me. I always heard
about the people who were there before me. Every person __5__ (talk) about in a
positive way. The conversation would go something like this, “Oh, Kay, soandso
was here yesterday, she __6__ (be) just ‘the salt of the earth’， isn't she? ”
The other sister would reply, “Oh, yes! You just can't believe __7__ wonderful
she is. ” I never heard they said a negative word about anyone. NEVER!
I understood why these two had so much company when other people complained that
no one cared about __8__ (they). It was their attitude __9__ people. There was
no doubt that when the next person came to visit, he was going to hear how I was
“the salt of the earth”．
