料电池;乙池中的两个电极均为石墨电极,乙池中盛有100mL 3.00mol.L﹣1的CuSO4溶液.请回答下列问题:
____
NA为阿伏加德罗常数,下列叙述正确的是M(Fe)=56 ( )
根据句意及所给汉语或首字母提示,写出句中所缺单词。(1)My brother ____ (骑)his bike to school.(2)Mary is good student. She is____ (从不)late for school.(3)Do you like to get up ____ (早)?(4)Don't ____ (说话)to your classmates.(5)There are a lot of a____ in the zoo.(6)There is a supermarket b____ the library and the school.
人生病输液时,注射在人体里的药物是通过( )来运输的.
《夜雨寄北》中诗人想像什么时候才能回到家中,和妻子一起一边剪去燃尽的烛芯,一边回味这巴山的绵绵夜雨。这两句诗表达了诗人____的心情。