题目内容
【单选题】The_________ from tourism is the biggest single contribution to GDP in the Maldives; every year many tourists from all comers of the world spend their holidays there.
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【单选题】Since the beginning of this century, China has built many modern conference centers with underground parking, air-conditioning and _________translation systems.
【单选题】While advertising offers a stimulus (剌激)to buy, sales promotion offers a(n) _________ to buy, but consumers must have their own reason to buy.
【单选题】In general, smokers living in cities are slightly more _________ to lung cancer than smokers who are living in the country.
【单选题】A large proportion of important _________are brought about by people who step outside of conventional categories or traditional assumptions.
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