style=”position: absolute; width:0; height:0;

overflow:hidden; left: -9999px; top: -9999px;”>2018年福建省中美英语口语培训班(day 7)liu linping

2018年福建省中美英语口语培训班(day7)<div>monday ,july.24,2018</div><h3>perior 1jennifer</h3><h3>vocabulary

in academic english and science</h3&

gt;<h3>water pollution——cross-curricular lesson</h3><h3>environment pollutant</h3><h3> filter</h3><h3>

filtration</h3><h3> budget</h3><h3>全班分成7个实验小组,每个小组20元购买做纯净水的材料。然后进行实验。</h3><h3><span style

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