1 . The change of_____________ causes the change of quality.
| A．economy | B．facility | C．equality | D．quantity |
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2 . Despite years of receiving ________ from publishers, he persevered in his attempt to establish himself as a writer.
| A．preference | B．philosophy | C．economy | D．rejection |
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3 . For countries such as Costa Rica, Kenya and Nepal, ecotourism is an important part of the _______.
| A．politics | B．history | C．geography | D．economy |
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4 . The government has devoted a large slice of its national _________ to agriculture.
| A．budget | B．arrangement | C．bonus | D．economy |
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