Because he was __________ the new limit, he was stopped and wanted for speeding. A. good at B. tired from C. unaware
下列各句中，没有语病的一句是（ ）（3分） A.随着全球气温升高，飓风、洪水、干旱等极端气象事件的频率和强度正在增加，气候变暖已成为全人类
11.I have a lot of readings ___________(complete) before the final exam. 12._________(compare) house prices here with that in Shanghai, you will find we are lucky. 13. ________(call) me up before yo
Once upon a time when Qin Shihuang was emperor in China, there was a beautiful young woman whose name was Meng Jiangnü. She married a man 36 Wan Xiliang, who she loved so 37.Not long after their 38
生活中碰到某些问题，常常涉及化学知识，下列分析正确的是（ ）A.氯气和二氧化硫均可作漂白剂，若同时使用它们去漂白某一湿润的物质，漂白
一个电子表工作时的电流强度是2μA，在10min内通过电子表内导体截面的电量是_____；通过的电子数是_____。
NaCl晶体模型如图所示,在NaCl晶体中，每个Na+周围同时吸引_______个Cl-，每个Cl-周围也同时吸引着_______个Na+；在NaCl晶胞中（晶胞是晶体中具有代表性的最
动物细胞与植物细胞的主要区别在于 A. 没有细胞壁 B. 没有细胞膜 C. 没有细胞质
