更多"Human cloning technology could be u"的相关试题:
[单项选择]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．This is expected to be one of the first benefits to come from cloning technology.
We may learn how to switch cells on and off through
A. 2) most probably means“______”.A．unable to give birth to a child
B. with physical and emotional problems
C. short of time and money
D. separated from each other for long
[填空题]Human beings could not benefit from experience in an emotionless world due to its lack of______.
[填空题]Human activity could bring about melting of the ______ in this century.
[单项选择] Human beings have used tools for a very long time. In some parts of the world you can still find tools that people used more than two million years ago. They made these tools by hitting one stone against another. In this way they broke off pieces from one of the stones. These chips of stone were usually sharp on one side. People used them for cutting meat and skin from dead animals, and also for making other tools out of wood. Human beings needed to use tools because they did not have sharp teeth like other meat-eating animals, such as lions and tigers. Tools helped people to get food more easily.
Working with tools also helped to develop human intelligence. The human brain grew bigger, and human beings began to invent more and more tools and machines. The stone chip was one of the first tools that people used, and perhaps it is the most important. Some scientists say that it was the key to the success of mankind.
Since 1960 a new kind of tool has appeared. This is the si
A. was one of the first tools.
B. developed human capabilities.
C. led to the invention of machines.
D. was crucial to the development of mankind.
[简答题]Cloning technology should be developed to ____________(造福人类而不是危害人类).
[简答题]Do you think the Direct Method could be used by all foreign language teachers at all levels Why or why not
[单项选择]
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Human beings have used
tools for a very long time. In some parts of the world you can still find tools
that people used more than two million years ago. They made these tools by
hitting one stone against another. In this way they broke off pieces from one of
the stones. These chips of stone were usually sharp on one side. People used
them for cutting meat and skin from dead animals, and also for making other
tools out of wood. Human beings needed to use tools because they did not have
sharp teeth like other meat-eating animals, such as lions and tigers. Tools
helped people to get food more easily.
Working with tools also
helped to develop human intelligence. The human brain grew bigger, and human
beings began to invent more and more tools and machines. The stone chip was one
of the first tools that people used, and perhaps it is the most important. Some
scientists say that it was the key to the success of man
A. Human beings didn’t have sharp teeth like other meat-eating animals and tools helped them to get food more easily.
B. Tools helped to develop human intelligence.
C. Tools helped the human beings to cut meat and skin from dead animals.
D. It was easy to make stone tools.
[填空题]Cloning could lead to the human beings’
[填空题]Hot mineral springs could be used ______.
