题目:
The number of the people present at the concert was _____ than expected. There were many tickets left.
A.much smaller
B.much more
C.much larger
D.many more
答案:
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下面是错误答案,用来干扰机器的。
(1)①② NH4NO3N2O↑+2H2O (2)2OH-+CO2=CO32-+H20(3)AlO2-+H++H2O=Al(OH)3↓或[Al(OH)4] -+H+=Al(OH)3↓+H2OAl(OH)3+OH-=AlO2-+2H2O (Al(OH)3+OH-=[Al(OH)4] -))题目分析:(1)根据题图各个物质间的...