单项选择题

If you take (a ten-or fifteen-minutes) vacation (into) the realm of imagination (each day), you may (add much to) the excitement and enjoyment of your life.

A. a ten-or fifteen-minutes
B. into
C. each day
D. add much to
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单项选择题
In order to adjust to the loss of salt, the body______.
A．loses some blood
B．speeds up its secretion of water
C．speeds up its secretion of salt
D．is drying up slowly
问答题
In this way, the body attempts to keep the amount of salt in the blood at the nec-essary level. The result is a slow drying up of body and, finally, death. The person dies of thirst.
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