Volunteers are being recruited(征募) to
eat raw potatoes in the first human trials of a vaccine grown in genetically
engineered vegetables. Researchers in Texas hope that people who eat the
potatoes will be protected against common gut(肠，肠子) infections. They believe
this technique could prove to be a cost-effective way of growing vaccines in
developing countries where such diseases are still killers.
Other researchers previously succeeded in using similar techniques to
produce potential vaccines Now Hugh Mason and his colleagues at Texas A & M
University(得克萨斯农业及机械大学) their plant vaccines on mice and plan to recruit 15
volunteers for a human trial.
The team first tested the
technique in tobacco plants. They took a strain of Escherichia coli(大肠杆菌)
ba
A. to prove that doctors don’t like vegetables
B. to amuse the reader by telling some funny things
C. to describe how vegetables can grow vaccines for their own use
D. to tell the reader about a cheaper way of growing vaccines
更多"下面有．3篇短文，每篇短文后有5道题，每题后面有4个选项。请仔细阅读短"的相关试题:
[单项选择] 下面有3篇短文，每篇短文后有5道题，每题后面有4个选项。请仔细阅读短文并根据短文回答其后面的问题。
{{B}}第一篇{{/B}}
{{B}}
Shakespeare{{/B}}
When talking about the world’s greatest poet and greatest dramatist, only
one name can possible suggest itself; that of William Shakespeare. Nearly every
Englishman has some knowledge, however slight, of the work of this greatest
writer. We use words, phrases and quotations form Shakespeare’s writings that
have become part of the common property of English-speaking people. Most of the
time we are probably unaware of the source of the words we use. For example, and
old lady, after seeing a performance of Hamlet complained, "It was full of
well-known proverbs and quotations!"
Shakespeare made full use
of the great resources of the English language. Most of us use about five
thousand words in
A. Shakespeare used an enormous number of words of the English language.
B. Shakespeare expressed his appreciation of the richness of the English language.
C. Shakespeare studied the various usages of the English language.
D. Shakespeare tried to maintain the original meaning of many English words.
[单项选择]
下面有3篇短文，每篇短文后有5道题，每题后面有4个选项。请仔细阅读短文并根据短文回答其后面的问题，从4个选项中选择1个最佳答案。 {{B}}第一篇{{/B}}
It has been argued that an infant under
three who is cared for outside the home may suffer because of the separation
from his parents. The British psychoanalyst John Bowlby maintains that
separation from the parents during the sensitive "attachment" period from birth
to three may scar a child’s personality and predispose to emotional problems in
later life. Some people have drawn the conclusion from Bowlby’s work that
children should not be subjected to day care before the age of three because of
the parental separation it entails, and many people do believe this. But there
are also arguments against such a strong conclusion.
Firstly
anthropologists point out that the secluded love affair between children and
parents found in modern societies does not us
A. should not be sent to school
B. should be cared for outside the home
C. will not suffer from parental separation
D. don’t mind who will look after them
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