单项选择题

Advertising media like direct mail, radio, television and newspapers ______ to increase the sales of industrial products.

[A] have been used
[B] will be used
[C] is being used
[D] has been used

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单项选择题

Although the model looks good on the surface, it will not bear close ______.

[A] disposition
[B] contamination
[C] scrutiny
[D] symmetry

单项选择题

I wish I ______ part in the concert, but I had to make a preparation for the examination.

[A] have took
[B] took
[C] might have took
[D] could have took

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