下列存放物质的方法中不正确的是( ) A . 金属钠保存在煤油中 B . 氢氟酸保存在玻璃试剂瓶中 C . 漂白粉必须密封保存 D . 氢氧化钠溶液保存在带橡胶塞的试剂瓶中 答案:B( D ) 10. Why don’t you go to the computer museum?You can learn all about the history ofcomputers,_learn about science.A. too B. eitherC. as well D. as well as