题目

“三江源自然保护区”中的三江,除澜沧江以外,另外两江指的是:（     ） A．长江、黄河      B.长江、雅鲁藏布江     C.黄河、珠江        D.珠江、塔里木河 答案：       A— Helen, your English is pretty good. How can I improve my English?—I think you can improve your English ______ reading more.A.atB.byC.onD.for