单项选择题

From the passage we can infer that______.

A．Kraemer will work with Chinese scientists in clone researches
B．about two thousand species will probably die out in next few decades
C．Kraemer and his team have succeeded in cloning a dog
D．scientists maintain that cloning animals is worth researching
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单项选择题
What can we infer from the passage
A．The state should provide protection for all the old people.
B．The state has to create a suitable framework to restrict the private pensions.
C．The state should protect those who can't support themselves.
D．The state will play a secondary role in pensions due to more private pensions.
单项选择题
It can be inferred from the passage the author is probably______.
A．an official engaged in reformation of pension structures
B．a sociologist devoting himself to the research of social pension structures
C．an economist mastering pension structures in developed countries
D．a politician interested in older people
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