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The use of gene therapy as a supportive method along with traditional treatments has

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发布时间：2022-09-03

更多“The use of gene therapy as a supportive method along with traditional treatments has ”相关的问题

第1题

A gene for chopsticks flexibility is found to be ______.A．unrelated to the ability to use

A gene for chopsticks flexibility is found to be ______.

A．unrelated to the ability to use chopsticks

B．related to the ability to use chopsticks

C．unrelated to the ability to use forks

D．related to the ability to use forks

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第2题

A gene for chopsticks flexibility is found to be______.A．unrelated to the ability to use c

A gene for chopsticks flexibility is found to be______.

A．unrelated to the ability to use chopsticks

B．related to the ability to use chopsticks

C．unrelated to the ability to use forks

D．related to the ability to use forks

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第3题

A gene for chopsticks flexibility is found to be______.A. unrelated to the ability to use

A gene for chopsticks flexibility is found to be______.

A. unrelated to the ability to use chopsticks

B. related to the ability to use chopsticks

C. unrelated to the ability to use forks

D. related to the ability to use forks

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第4题

Why does the writer use the first example in the first paragraph regarding achondroplastic

dwarfism？

A．To give an example of one who's suffering from this disease.

B．To illustrate why a person may suffer from this disease.

C．To point out the causes of all genetic diseases.

D．To relate a defective gene with a recessive gene.

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第5题

Using HIV Virus to Cure Cancer Scientists are planning to use human immunodeficiency （免疫

Using HIV Virus to Cure Cancer

Scientists are planning to use human immunodeficiency (免疫缺陷) virus (HIV), one of mankind's most feared viruses, as a carrier of genes which can fight cancer and a range of diseases that cannot be cured. The experts say HIV has an almost perfect ability to avoid the body's immune (免疫的) defenses, making it ideal for carrying replacement genes into patients' bodies, according to the Observer.

A team at the California-based Salk Institute, one of the world's leading research centers on biological sciences, has created a special new breed of HIV and has started negotiations with the U.S. Food and Drug Administration (FDA) to begin clinical gene therapy (治疗) trials this year. The first trials are expected to involve patients suffering from cancers that cannot be cured by surgery although project leader Professor Inder Verma said the HIV technique would have "far wider applications".

The plan remains very likely to cause controversy since it involves making use of a virus which has caused more than 22 million deaths around the world in the past two decades. Verma said that the idea of using HIV for a beneficial purpose was "shocking" but the fierce nature of HIV had disappeared by having all six of the potentially deadly genes removed.

Illnesses such as various cancers are caused when a gene in a patient's body fails to work properly. In the past two years, breakthroughs in genetics (遗传学) have led gene therapy scientists to try and replace the genes that de not function normally.

Unfortunately, the body's immune defenses have been known to attack the modified genes and make them lose their effects before they can start their task and progress in the field has been held up by the lack of a suitable carrier.

The HIV virus has the ability to escape from, and then destroy, the immune defense cells designed to protect our bodies and this makes it attractive to scientists as a way of secretly conveying replacement genes into patients' bodies.

FDA has approved the plan of using HIV to cure cancer in humans.

A．Right

B．Wrong

C．Not mentioned

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第6题

根据下列文章,请回答 16～22 题。 Using HIV Virus to Cure Cancer Scientists are planning

根据下列文章,请回答 16～22 题。

Using HIV Virus to Cure Cancer

Scientists are planning to use human immunodeficiency(免疫缺陷)virus(HIV)。One of mankind’s most feared viruses，as a carrier of genes which can fight cancer and a range of diseases that cannot be cured．The expels say HIV has an almost perfect ability to avoid the body’s immune(免疫的)defenses，making it ideal for carrying replacement genes into patients’ bodies。according to the Observe．

A team at the California-based Salk Institute，one of the world’s leading research centers on biological sciences。has created a special new breed of HIV and has started negotiations with the U．S．Food and Drug Administration (FDA)to begin clinical gene therapy(治疗)trials this year．The first trials are expected to involve patients suffering from cancers that cannot be cured by surgery although project leader Professor inder Verma said the HIV technique would have” far wider applications”．

The plan remains very likely to cause controversy since it involves making use of a virus which has caused more than 22 million deaths around the world in the past two decades．Verma said that the idea of using H IV for a beneficial purpose was“shockin9’’but the fierce nature of HIV had disappeared by having all six of the potentially deadly genes removed．

Illnesses such as various cancers are caused when a gene in a patient’s body fails to work properly．In the past two years。breakthroughs in genetics(遗传学)have led gene therapy scientists to try and replace the genes that do not function normally．

Unfortunately, the body’s immune defenses have been known to attack the modified genes and make them lose their effects before they can start their task and progress in the field has been held up by the lack of a suitable carrier．

The HIV virus has the ability to escape from．and then destroy, the immune defense cells designed to protect our bodies and this makes it attractive to scientists as a way of secretly conveying replacement genes into patients’ bodies.

第 16 题 FDA has approved the plan of using HIV to cure cancer in humans．

A．Right

B．Wrong

C．Not mentioned

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第7题

American students learn business skills in school. Here is a story about some American

students who learnt business skills by operating their own banks.

In December 1987，the Twiglet Bank was opened at an Elementary School in Miami,Florida. It is a real bank that accepts money for savings and makes loans, and it is operated by students between 10 and 12 years old. The bank is open for one hour two days a week.Students can put their money into the bank and withdraw it as they wish. Officials from a local bank helped the students start the bank. They trained twenty-three of ther to do all the different kinds of bank jobs, from counting money to guarding the bank. The students needed money to start the bank. They raised more than $ 2,000 by selling 50-dollar shares in the bank to parents, teachers, the local bank workers, and customers.

Organizing and operating the bank has taught the children a lot about the banking business. They have learned about raising and investigating money and how to use computers and other banking equipment. They have also learned how to ask for a job and to be responsible for their jobs.

1.Who operated Twiglet Bank？

A.The teenagers

B.The community

C.The government

2.Who helped these children start a bank？

A.Parents

B.Teachers

C.Bank officials

3.How did children raise money for their bank？

A.Their schools provided financial support for them

B.They found an organization to donate a set of fund

C.They sold shares in the bank to parents, teachers, etc

4. Which is NOT true for the benefits of children from operating their own bank？

A. They learned how to produce the money

B. They learned how to look for a job and do it well

C. They learned how to use computers and banking equipment

5. What is the best title for this passage？

A. A bank of Miami

B. A Student Bank

C. The Operation of American Bank

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第8题

Passage Two Modern humans emerged some 250,000 years ago, yet agriculture is a fairly

recent invention, only about 10,000 years old. Many crop plants are rather new additions to our diet: broccoli (a flowering mutant of kale) is thought to be only 500 years old. Most innovation is far more recent still. Although Austrian monk Gregor Mendel's pea plant experiments quietly laid the basic foundations of genetics in the mid-19th century, his work was rediscovered and applied to crop breeding only at the beginning of the 20th century. Further advances have steadily accumulated. The 1940s saw the identification of DNA as genetic material and the adoption, by commercial breeders, of genetic modification - typically by applying chemicals or radiation to DNA to try to make plants with advantageous characteristics. The modifications ultimately led to the green revolution of the 1960s and 1970s, during which time global wheat yields tripled. The 1980s and 1990s saw the commercial adoption of agricultural biotechnology, which has allowed breeders to introduce specific genes into crops from the same or different species. In 2004 the first plant genome was fully sequenced, and since then the number of plant gene sequences in GenBank, the public repository for gene sequence information, has been doubling every two years. Our knowledge is increasing exponentially, as it has been in other fields such as semiconductors and cellular telephony. Our challenge is to increase agricultural yields while decreasing the use of fertilizer, water, fossil fuels and other negative environmental inputs. Embracing human ingenuity and innovation seems the most likely path. Plants did not evolve to serve humans, and their sets of genes are incomplete for our purposes. The integral role of modifying genes is obvious to all breeders, though sometimes painfully absent from the public's understanding of how modern agriculture succeeds. All breeding techniques, from before Mendel's time until today, exploit modifications to plant DNA. These modifications can take the form. of mistakes or mutations that occur during natural cell division in the wild; the natural but random movement of DNA sequences from one part of a plant's genome to another; or the more precise insertion of known gene sequences using biotechnology. In all these cases, plant genes are moved within or across species, creating novel combinations. Hybrid genetics - the combination of different versions of the same gene – has resulted in spectacular yield increases. Largely as the consequence of using hybrid seed varieties, corn yields in the U.S. have increased more than 500 percent in the past 70 years. Questions 6-10 are based on Passage Two.

(1)Which statement is correct according to paragraph one？

A、Broccoli was first bred by Mendel

B、Broccoli wasn’t considered edible until 500 years ago

C、Mendel's work was considered most important in the history of genetics

D、Mendel’s study found its major application some 100 years ago

(2)What was cited as a result of the green revolution？

A、Sharp rise in worldwide wheat production

B、Extensive use of organic fertilizer

C、Large-scale adoption of genetic modification

D、Commercial success of genetically modified seeds.

(3)Which statement is true of GenBank according to the passage？

A、The number of gene sequences has doubled since its foundation

B、The commercial breeders are its main sponsors

C、It is a genetic sequence database

D、It was founded in 2004

(4)It can be learned from the passage that the significance of genetic modification is ______.

A、questioned by some critics

B、poorly conveyed to the public

C、appreciated by all breeders

D、fully understood only by scientists

(5)The word “novel” in paragraph three is closest in meaning to ______.

A、artificial

B、various

C、hybrid

D、new

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第9题

The Gene Industry Major companies and already in pursuit of commercial applications of the

The Gene Industry

Major companies and already in pursuit of commercial applications of the new biology. They dream of placing enzymes in the automobile to monitor exhaust and send data on pollution to a microprocessor that will then adjust the engine. They speak of what the New York Times calls "metal-hungry microbes that might be used to mine valuable trace metals from ocean water". They have already demanded and won the right to patent new life forms.

Nervous critics, including many scientists, worry that there is corporate, national, international, and inter-scientific rivalry in the entire biotechnological field. They create images not of oil spills, but of "microbe spills" that could spread disease and destroy entire populations. The creation and accidental release of extremely poisonous microbes, however, is only one cause for alarm. Completely rational and respectable scientists are talking about possibilities that stagger the imagination.

Should we breed people with cow-like stomachs so they can digest grass and hay, thereby relieving the food problem by modifying us to eat lower down on the food chain？ Should we biologically alter workers to fit the job requirement, for example, creating pilots with faster reaction times or assembly-line workers designed to do our monotonous work for us？ Should we attempt to eliminate "inferior" people and breed a" super-race"？ (Hitler tried this, but without the genetic weaponry that may soon issue from our laboratories.) Should we produce soldiers to do our fighting？ Should we use genetic forecasting to pre-eliminate "unfit" babies？ Should we grow reserve organs for ourselves, each of us having, as it were, a "savings bank" full of spare kidney, livers or hands？

Wild as these notions may sound, every one has its advocates (and opposers) in the scientific community as well as its striking commercial application. As two critics of genetic engineering, Jeremy Rifkin and Ted Howard, state in their book Who Should Play God？ "Broad Scale genetic engineering will probably be introduced to America much the same way as assembly lines, automobiles, vaccines, computers and all the other technologies. As each new genetic advance becomes commercially practical, a new consumer need will be exploited and a market for the new technology will be created."

According to the passage, the exhaust from a car engine could probably be checked by______.

A．using metal-hungry microbes

B．making use of enzymes

C．adjusting the engine

D．patenting new life forms

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