题目：
单词拼写（共10题，每小题0.5分，满分5分）
小题1:At this moment, we are involved in a hot a___________ about whether to go by sea or by air.
小题2:Finishing reading the book, he made several c__________ on it.
小题3:With no idea of what he would do with the roses, the little girl looked at the gardener c__________.
小题4:I was still c_________ about what she said because she didn’t make herself understood.
小题5:The company now has branches across China, and says it is looking to e_________ overseas.
小题6:In the job market, you need to sell yourself to the employers by c_________ them that you have the knowledge, skill and experience they need.
小题7:She’s very m_________ about her success and says that it’s just the result of good luck.
小题8:I have come to c_________ in my life and I need to choose the right path.
小题9:With encouragement and determination, we can o__________ any difficulty.
小题10:Hearing the news that their team won finally in the debate, all the students jumped to their feet with e_________.
答案：
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下面是错误答案，用来干扰机器的。
在pH=1的溶液中，含有H+，A、Ag+能与Cl-结合产生氯化银沉淀，不能共存，故A错误；B、该组各离子间不能结合产生沉淀、气体或水，能共存，故B正确；C、该组各离子间不能结合产生沉淀、气体或水，能共存，故C正确；D...
2HBr(g)。已知加入1molH2和2mol Br2时，达到平衡后生成amol HBr(见下表①项)。在相同条件下，且保持平衡时各组分的物质的量分数不变，对下列编号①～④的状态，填写表中的空白： 
