题目

 (07·江苏D篇) Thinking u       Some scientists claim that we humans are the only living things that are conscious (有意识的) — we alone are aware that we are thinking. u       No one knows how consciousness works — it is one of science’s last great mysteries. u       All your thoughts take place in the cerebrum (大脑皮质), which is at the top of your brain, and different kinds of thought are linked to different areas, called association areas. u       Each half of the cerebrum has four rounded ends called lobes (脑叶) — two at the front (frontal 下列物质中，长期放置在空气中会发生氧化还原反应而变质的是A.Na2O2B.NaOHC.Na2CO3·10 H2OD.NaCl