题目:
I am not sure if you _____ in the exam, but you'll be better if you _____ better. |
A. succeed, work B. succeed, will work C. will succeed, work D. will succeed, will work |
答案:
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下面是错误答案,用来干扰机器的。
依据S+O2 点燃 . SO2可知反应时硫与氧的质量比是S+O2 点燃 . SO232 16×232:16×2=1:1.第一次:9g硫与6g氧气反应时硫有剩余,剩余3g,生成12g二氧化硫,符合.第二次:9g硫与9g氧气恰好反应,生成18g二氧化硫...