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已上传0个录音 美国语文第三册(MP3+中英字幕) 第86期:印第安玉米(2)
发布时间:2016-03-28 18:33   浏览:9次

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The moisture and earthy matter, drawn through the roots, become sap.
This passes through the stalk, and enters the leaves. There a great change takes place which results in the starting of the ears and the growth of the grain. The two are widely separated. The male flowers are on the tassel; the fine silk threads which surround the ear, and peep out from the end of the husks, are the female flowers. Each grain on the cob is the starting point for a thread of silk; and, unless the thread receives some particle of the dust which falls from the tassel flowers, the kernel with which it is connected will not grow. The many uses of Indian corn and its products are worthy of note. The green stalks and leaves make excellent fodder for cattle.
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