问题
填空题
测定牛乳中脂肪含量时，常用的方法有碱性乙醚提取法/罗紫—哥特法和（）法。
答案
参考答案：巴布科克氏
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测定牛乳中脂肪含量时，常用的方法有碱性乙醚提取法/罗紫—哥特法和（）法。
参考答案：巴布科克氏
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| We live in different places. For example, some people live in the mountains; some people live on plains; some people live near water. Mary lives near the sea. The sea is blue. She likes to play on the beach with her friends. Tom lives by a lake. The lake is very big. The water is clear. He often goes boating with his family on fine days. Sometimes he goes fishing with his father on Sundays. Jack lives in the mountains. The mountains are very high. In the summer, it's very cool there. In the winter, the mountains are all white. Jack likes to play in the snow with his sister. Jim lives on a plain (平原). He likes flying kites when the weather is fine. Tony lives in the desert (沙漠). It is very hot and dry. It doesn't get much rain. Tony likes to ride his camel all around. David lives in a forest. The forest has many trees. It rains a lot there. David likes to climb the trees and play in his tree house. | |||||||||||||||||||||
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