I'm sorry to say that I didn't ________ him to become a successful writer.
A:let
B:make
C:hope
D:expect
读“我国华北地区1954~2002年气温与降水量变化示意图”,完成以下两题。
①氨气____②水____③二氧化碳____
④碱式碳酸铜____⑤氧化铜____⑥氧化镁____
⑦写元素符号:硅____ 氯____ 碘____.