Extend the range of scale and arpeggio practice.
扩展音阶范围，并进行琶音练习。
Drought occurred at a great range of scale in North China between October 2008 and February 2009 on a consistent basis, which impacted the growth of winter wheat seriously.
2008年10月至2009年2月，我国北方地区出现大面积的持续干旱，给冬小麦的生长造成了严重的影响。
Drought occurred at a great range of scale in North China between October 2008 and February 2009 on a consistent basis, which impacted the growth of winter wheat seriously.
2008年10月至2009年2月，我国北方地区出现大面积的持续干旱，给冬小麦的生长造成了严重的影响。
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