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急 pp语法解答
1. Lactose,a sugar present in milk, is one of simple sugars used in food preparations for infants. 答案是c 请问原因
2. The Mississippi riverboat, which evolved from simpler steamship of the early 1800's, became the dominant form of passenger transport on the Mississippi River. 答案是b 请问为什么
3. The coal industry is important to every industrial nations because most other industries are directly or indirectly dependent on it. 答案是a 请问为什么
着急啊 各位帮个忙 谢谢 |
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