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某乡村距城市50km,甲骑自行车从乡村出发进城,出发1小时30分后,乙骑摩托车也从乡村出发进城,结果比甲先到1小时,已知乙的速度是甲的2.5倍,求甲、乙两人的速度。
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解:设甲的速度是 xkm/h, 则乙的速度是 (2.5x

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    Queensland is one of the most amazing states in Australia. It has some of the most beautiful natural scenery on the planet, with the Great Barrier Reef, rainforests and impressive beaches.

The Great Barrier Reef

    It is one of the world's largest natural features. It stretches more that 2,300 km along the north eastern coast of Australia from the northern tip of Queensland to just north of Bundaberg. The things that most surprise visitors to the reef are the colors.

Without doubt, the best way to see the Great Barrier Reef is by diving. If you have a little extra money and you are feeling a bit lazy, you can fly over the reef in a plane.

Fraser Island

    Another area of natural beauty is Fraser Island. This is the world's largest sand island. It's best visited from Hervey Bay on the mainland, where there are a number of places offering trips around the island. To fully appreciate Fraser Island you should go for three or four days. Attractions include some beautiful fresh-water lakes, particularly Lake Wabby and Lake Mckenzie. You can walk around these on white sands untouched by human footprints. Indian Head also has some beautiful views. Braver travelers can go and watch sharks circling the water hundreds of meters below.

The Whitsunday Islands

    It would be a pity to travel around Queensland without taking a trip around the Whitsunday Islands. They were named by Captain Cook in 1770, after the day on which he arrived. Here are some of the great things you can do there.

●Cruise around them on a relaxing trip.

●Take a sailing course.

●Look at the aboriginal (土著的) paintings in caves on Hook Island.

●Have fun in the water doing lots of water sports.

    So, will you be going to Queensland?