书城教材教辅科学读本(英文原版)(套装1-6册)
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第88章 第二册(5)

"Because the sponge is porous and elastic, soft and smooth, it is the very best thing we can use to wash a sore place of any kind.""Mother always uses a sponge," said Norah, "to wash the baby. Baby"s skin is very tender, and the soft smooth sponge does not scratch it."SUMMARY

new paragraph Sponge is useful because it is porous, elastic, soft, and smooth.

Lesson 03

The Sponge

"Isn"t it strange?" said Fred, "We were talking about the sponge last night, and today we have had a lesson on it at school.

"I know now what a sponge is. I have often tried to think, but I could never make it out, till teacher told us today.""I never thought it could be an animal." said Willie. "It is not quite right to call it an animal," said Fred. "Teacher says it is the skeleton of an animal,that"s all."