根据提示写单词。

求：

    Most people like bikes. Perhaps you ride a bike to school. Riding a bike can be great of fun.Do you know how to ride a bike safely?

    Careful boys and girls learn to ride their bikes well before they go out on the road.How can you tell whether you are a good rider?

    If you can ride a bike in a straight line,you can ride well .If you can't ,you should practice riding a in a safe place.

    To be safe on a bike, you need to use both hands and both feet. Keep your feet on the pedals(脚蹬)and your hands on the handle bars.

    You know that your bike is only for one person. It's not safe to carry anyone with you. Keep yourself safe when you ride on a bike.Watch where you are going all times.

①转化为现实生产力是科技创新价值的重要体现

②不断发展的社会需要是科技创新的重要动力

③科技创新以思想观念的创新为先导

④科技创新总是通过吸收、改造传统技术而实现

菊花的花期在秋季。菊花是一种短日照植物，只有当日照长度短于其临界昼长（一般小于12小时）时才能开花，否则只进行营养生长。2012年至今，位于大别山区的麻城市已经成功举办多届菊花展，“麻城福白菊”逐步走向国内外市场。据此完成下列各题。