【单选题】She __________ the secret that Mary was divorced once.
【简答题】氢在金属中的存在形式包括:(__)、(__)、(__)和(__)。
【多选题】腐殖质对重金属迁移和转化的影响包括:( )
A.
可抑制金属以碳硬盐、硫化物和氢氧化物沉淀形式存在。
【单选题】- Hey, Tom, what's up? - __________
C.
What is happening in your life?
【简答题】A)divorced B)separated C)isolated D)broken
【判断题】Single parents can live a better and easier life once they divorced with their troubling partners.()
【单选题】These shorts are _____. [ ]