A:澄清石灰水和稀硝酸反应
B:氢氧化镁和稀盐酸反应
C:Ba(OH)2溶液滴入稀硫酸中
D:二氧化碳通入澄清石灰水中
have fun; dress up; play tricks on; gain; admired… for; in memory of; look forward to; look as though/if; take place; starve to death