hundredschangefrombadnearinsidewethersunshinestudyingrainyDo

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Do you know something about tree rings?Do you know they can tell us what the ____ was like,sometimes even ____ of years ago?
A tree will grow well in a climate with lots of _____ and rainfall.And little sunshine or rainfall will limit th growth of a tree.We can see the _____ of climate by _____ the tree rings.For example,to find out the weather of ten years ago,we can count rings of a tree from the outside to th _____ .If the tenth ting is far _____ the eleventh ring,then we're sure that is was sunny and _____ most that year.If it is _____ to the eleventh ring,then the climate that year was _____ .

肯定都对!讲树年轮和气候变化关系的!
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