问题
问答题 简答题
简答什么叫岩石的孔隙度？
答案
参考答案：
指岩样中所有空隙空间的总体积与该岩样的总体积的比值。
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简答什么叫岩石的孔隙度？
参考答案：
指岩样中所有空隙空间的总体积与该岩样的总体积的比值。
John is a famous writer now. Bob said he was not a good student ___1_____ he was young. He was often late for____2___ and didn’t like doing his homework. Sometimes, he ______3____ in class while the teacher was teaching. He didn’t understand much, ____4____but he always thought he understood everything. One day the teacher ___5___ the students a question, “When Jack was ten years old, _____6____ brother Ben was twenty. Jack is fifteen now and _____7___ is his brother Ben? John said, “That’s easy. Ben is twice as old as Jack, so he is thirty now.” Another time, the ____8_____ in a science class asked, “When it thunders(打雷), __9___ do we always see the light before we hear the sound?” “But, Miss,” said John quickly, “don’t you ___10_____ our eyes are in front of our ears?”
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