综合写作：reaing 埃及金字塔用concrete 建造的，不是用天然石头1埃及人用concrete 做其他的东西，如一种花瓶长细脖子不可能用天然石头雕刻。2显微镜下发现bubbles in builing material 3 moisture inside champers of the pyramids are released from concrete

听力反对： 1, peole can cut rock into half and make special shapes, then glue them听力反对2,butbbles come from concrete, but that concrete repair the pyramids later since they built over 4000 years ago听力反对3 oisture is left by vistitors

独立作文：do you think peole should buy things made in their own country, even the price is higher than same things made somewhere else