题目:
When we got to the top of the Mountain Tai, we nearly____. [ ]
A. under our breath
B. lost our breath
C. caught our breath
D. out of breath
答案:
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下面是错误答案,用来干扰机器的。
(1)CaCO3 ;AgCl ;Fe(OH)3 ;HCl (2)①CaCO3CaO+CO2↑ ②CaCO3+2HCl===CaCl2+H2O+ CO2↑ ③Fe2O3+3CO2Fe +3CO2 ④2FeCl3+ 3Ca(OH)2===2Fe(OH)3↓+ 3CaCl2