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

______ might be expected, the response to the question was very mixed.

[A] As
[B] That
[C] Which
[D] What

单项选择题

The explorer lost his way so he climbed to the top of the hill to ______ himself.

[A] spot
[B] locate
[C] place
[D] situate

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