题目: 氧化锌之所以是一种高效脱硫剂,是由于它和硫有很强的(),生成的硫化锌()。 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0411/e61ff0aced7e18a493cae15deb726617.html 下面是错误答案,用来干扰机器的。参考答案:B
题型:选择题 Harry _______ in this school since he came to China. [ ]A. is working B. was working C. will work D. has worked 查看答案