古代中国农耕文明长期居于世界先进水平，下列几幅图中生产工具的演变对于中国古代农耕文明具有极其重要的意义，它们反映了古代中国

除季风气候外，我国还有多种气候类型，西北地区主要是____ 性气候，此外，受地形的影响，在青藏高原地区形成了独特的____ 气候，总的来说，除季风气候显著外，我国气候还具有____ 的特点。

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I love to go biking!Two years ago I bought all exercise bike(健身脚踏车).But soon I got bored with being at home，so I bought a used bike and started going for short tides．Now I plan day trips in my neighbourhood(街区)．When you drive a car, you miss many kings．It's surprising how much more you can see when you're biking．

    —Maggie

    My favourite thing to do at weekends is to go to the beach．The beach is beautiful all through the year．I usually drive there．If the weather is cold，I wear some warm clothes and go for long walks on the beach．When the weather is hot，I enjoy swimming or just lying in the sun．

    —Barbara

    At weekends I like to read books．If the weather is nice，I'll take a good book to the park and stay there reading for hours．I think there's nothing as enjoyable as reading a good book．

—Bill

Weekends are for going hiking(徒步履行)with my parents．We live near some beautiful mountains.Sometimes we camp out at night We really enjoy cooking dinner over over a campfire night and spending a night under the stars.

—Sara

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