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Aesop’s fable/a(famous) fable
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填空题Work

单项选择题A．They often take place in her major industries.B．British trade unions are more powerful.C．There are more trade union members in Britain.D．Britain loses more working days through strikes every year.

A．They often take place in her major industries.
B．British trade unions are more powerful.
C．There are more trade union members in Britain.
D．Britain loses more working days through strikes every year.

填空题Breakfast

填空题saving and investment

单项选择题The author's assertions concerning the conditions that lead to the decay of the vacuum would be most weakened if which of the following occurred

A．Scientists created an electric field next to a vacuum, but found that the electric field was not intense enough to create a charged vacuum.
B．Scientists assembled a super heavy atomic nucleus next to a vacuum, but found that no virtual particles were created in the vacuum's region of space.
C．Scientists assembled a super heavy atomic nucleus next to a vacuum, but found that they could not then detect any real particles in the vacuum's region of space.
D．Scientists introduced a virtual electron and a virtual positron into a vacuum's region of space, but found that vacuum did not then fluctuate.