题目

We have two books here. One is interesting, and ________ is relaxing. A．another       B．the other      C．other          D．the others 答案：B下列化学用语表达正确的是A.3个钠离子--3Na+1B.2个氧原子--O2C.1个氮气分子--N2D.硫酸铁--FeSO4