A:150mL 2mol•L﹣1 KClO3溶液
B:75mL 2mol•L﹣1CaCl2溶液
C:150mL 2mol•L﹣1 KCl溶液
D:75mL 1mol•L﹣1AlCl3溶液
1张100元=____张20元
It will be 20 years since Hong Kong returned to China on July 1,1997.(就划线部分提问)
____ ____years will it be since Hong Kong returned to China on July 1, 1997?
用下列词语造句
①等闲
②清白