下面是有氧呼吸过程图解,请据图完成有关问题: (1)图中A、D所代表的物质分别是__________和__________。 (2)在有氧呼吸过程中的第_________阶
Mr. Smith lived in a small village. He grew vegetables. Years ago he found work in a big city and moved there with his family. On the first Saturday in their new home, Mr. Smith took his new car out o
金属活动性的强弱与人类开发利用这些金属单质的时间顺序有着某种内在联系。由此推断,下列金属中人类开发利用最晚的是:( ) A.Cu
物理知识与人们的衣食住行相关,以下说法正确的是( )A. 超导材料可应用于制作电饭锅的电热丝B. 晾衣服要放在通风处是为了加快水分的蒸发C.
数列{-2n2+29n+3}中的最大项是A.108 B.107C.106
世界上黑种人的故乡是( ) A.撒哈拉以北非洲 B.亚洲东部 C.撒哈拉以南非洲 D.欧洲西部
President Hu Jintao urged that every effort to_____rescue and treat the injured when the earthquake happened in Sichuan this year. A.is made B.must be made
2009年10月,中国首台千万亿次(即10的15次方)超级计算机——“天河一号”研制成功。超级计算机性能的发展遵循千倍定律,即每隔l0年性能就会提高1000