题目内容

Ask your doctor whether a low-fat diet and a daily walk will______to reduce your high blood pressure.

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The______from tourism is the biggest single contribution to GDP in the Maldives; every year many tourists from all corners of the world spend their holidays there.

Since the beginning of this century, China has built many modern conference centers with underground parking, air-conditioning and______translation systems.

While advertising offers a stimulus (刺激) to buy, sales promotion offers a(n)______to buy, but consumers must have their own reason to buy.

In general, smokers living in cities are slightly more______to lung cancer than smokers who are living in the country.

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