单项选择题

Susan wants to know whether the measures have been agreed().

A. to
B. with
C. over
D. upon

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单项选择题

Which of the following helped to preserve Lindow Man ().

A. Ice and low temperature.
B. Bacteria and oxygen.
C. Soil and energy.
D. Acid and water.

单项选择题

When the demand for facial tissues increased,().

A. the supply was quickly exhausted
B. its price went up
C. the manufacturers tried to improve their quality
D. more manufacturers went into the business of making tissues