单项选择题

The effect of doubling the width of a beam,______ is to double the load that can be sustained.

A．other factors remain constant
B．other factors remained constant
C．the other factor being constant
D．other factors remaining constant
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单项选择题
In large cities, many measures have been taken against______ dreiving.
A．drinking
B．drunken
C．drunk
D．drink
单项选择题
You can get anything, so long as you stick to it, and stick to it hard enough and long enough. Anything______.
A．anyhow
B．whatever
C．however.
D．somehow
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