单项选择题

The morning class ______ over, students rushed Out of the classroom for lunch.

A．was
B．is
C．having been
D．being
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单项选择题
The higher the standard of living and the greater the national wealth, ______.
A．the greater amount of paper is used
B．the greater is the amount of paper is used
C．the greater the amount of paper used
D．the amount of paper is used greater
单项选择题
______ the advances of scientific forecasting, in spite of the thousands of daily bulletins and advisories that get flashed about, the weather is still ultimately capricious and unpredictable.
A．For all
B．But for
C．As for
D．As to
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