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

I have offered a prediction that the reforms run a very high risk of being______ by a general collapse of confidence in the ruble.

A．set back
B．let down
C．hold back
D．run down

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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