题目

用单词的适当形式完成短文 Researchers find thatlarge amount of African dust can blow all the way across the Atlantic Ocean and fall on North and South Americas. African dust storms can harm air quality the ocean. But new research by scientists from some countries  (show) the storms also can do some good. is found that an average of 28 million metric tons of Saharan dust falls in South America's Amazon River basin each year. Scientists say the dust is an important(provide) of fertilizer. "Yes, it's(surprise) because of the huge amount of dust and phosphorous(磷),  is a nutrient that plants need(grow)," one of them says. In fact, the phosphorous(fall) from the sky is about the same as the amount that rivers carry out each year. The thick rainforest and the desert dust (join) together on one small planet. 答案：【1】a【2】across【3】shows【4】It【5】provider【6】surprising【7】which【8】to grow【9】falling【10】are joined

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