— ___________?
— That sounds good!
A:When is your birthday
B:How many cards do you have
C:Would you like to go to the movies
D:How far is it from our school to your home
2015年度“全国十大考古新发现”之海南新石器时代遗存,距今约6000年.同一时期生活在我国黄河流域的原始居民是( )
在一个小烧杯里加入约20g已研磨成粉末的氢氧化钡晶体Ba(OH)2•8H2O,将小烧杯放在事先已滴有3~4滴水的玻璃片上,然后向烧杯内加入约10g氯化铵晶体,并立即用玻璃棒迅速搅拌.试回答下列问题: