更多"A. It could be a positive outlet of"的相关试题:
[填空题]Positive memories could__________________(改善一个人的自我形象) which has an important effect on a person’s actions and accomplishments.
[单项选择]Passage 4
Human cloning technology could be used to reverse heart attacks. Scientists believe that they may be able to treat heart attack victims by cloning their healthy heart cells and injecting them into the areas of the heart that have been damaged, and other problems may be solved if human cloning and its technology are not forbidden.
With cloning, infertile couples could have children. Current treatments for infertility, in terms of percentages, are not very successfully. Couples go through physically and emotionally painful procedures for a small chance of having children. Many couples run out of time and money without successfully having children. Human cloning could make it possible for many more infertile couples to have children than ever before.
We should be able to clone the bone marrow for children and adults suffering from leukemia(白血病).This is expected to be one of the first benefits to come from cloning technology.
We may learn how to switch cell
A. removing the damaged part of the heart
B. replacing the old heart with a cloned one
C. repairing the heart with cells cloned from healthy ones
D. giving the patients injections of various medicines
[单项选择]
CHICAGO-The fact that an obscure scientist could become an instant media celebrity by announcing he was ready to create a human clone shows the degree to which the issue fascinates and scares humankind, experts said last week.
"It’s not a fear of science but of how to control the technology-" and that goes back in fiction to Frankenstein," said Anne Figert, a professor in the anthropology and sociology department at Loyola University of Chicago.
"We weren’t upset about (cloning) animals," she added. "It’s the same reason we’re concerned about abortion or using reproductive technologies. Twenty years ago it was test tube babies-it treads so closely to human life itself."
The idea also has an irresistible pull because it touches on a central theme throughout civilization: The search for immortality, added Kenneth Howard, a professor of psychology at Northwestern University in Chicago.
But tho
A. out of the ordinary
B. out of tune
C. out of control
D. out of action
[单项选择]A．Positive. B．Negative. C．Neutral. D．Indifferent.
[填空题]
Wild ducks and other migratory (迁移的) birds could be important
carriers of deadly bird flu, researchers say. Even so. the infectious-disease
experts say there is no solid basis for killing wild birds to protect poultry
and minimize the risk. of human infection.
The European team
investigating the global spread of the It5N1 strain of avian influenza (禽流感)
says certain duck species may be infecting wild bird populations. Geese and
wading birds are also possible vectors (带菌者) of the virus, the team
says.
The team’s study was led by Bjorn Olsen of Umea University
in Sweden~ Olsen runs Europe’s largest wild-bird flu monitoring
program.
Studies have shown that influenza viruses in lake
water, generally passed via bird feces(粪), can stay infectious for up to 30
days. The migration or feeding behavior of dabbling ducks could at least
partially explain the spread of the H5NI strain of bird flu, the researchers
add.
This group of duc
[填空题]
A．could
B．would
C．should
D．found
[单项选择]A. Positive. B. Negative. C. Indifferent. D. No specific idea.
