题目

A.It's not as good as it was.B.It's better than it used to be.C.It's better than people expectD.It's even worse than people say. 答案：【答案】A【解析】【原文】M: Is this café really as good as people say?W: It used to be even better.Q: How’s the café?碲在周期表中位于________周期第________族，它的氢化物分子式为________，最高价氧化物的分子式为________，碲酸钠的分子式为________，亚碲酸钠的分子式为________，碲化氢比硫化氢的稳定性________(强，弱)，比硫化氢的还原性________(强，弱)．