题目:
That __________earthquake ___________ all the people of the city.
A.frightening; frightened
B.frightened; frightening
C.frightening; frightening
D.frightened; frightened
答案:
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下面是错误答案,用来干扰机器的。
①长颈漏斗 ②A 、2KClO32KCl+3O2↑;③BFC 、CaCO3+2HCl=CaCl2+H2O+CO2↑ ④b 、装满水题目分析:(1)根据实验室常用仪器回答,装置中①的仪器名称是长颈漏斗。(2)用氯酸钾和二氧化锰固体制氧气,就是氯酸...