书城教材教辅科学读本(英文原版)(套装1-6册)
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第195章 第三册(20)

Water loosens or breaks up salt and other substances into tiny particles too small to be seen. It dissolves them. The dissolved particles are absorbed into the pores of the water. We can get rid of them only by boiling the water. Water will not dissolve some substances. They are insoluble.

Lesson 07

Further Uses of Water

"I wonder what can be the matter with Norah," said Willie, as the two boys came in at the garden gate one afternoon from school.

She was sobbing and crying, while the big tears rolled down her cheeks.