红宝石的热处理常采用（）气氛，以消除（）色调，还可以消除金红石针状包裹体．
参考答案：氧化；多余的蓝
用ASCII码(7位)表示字符5和7为( )。
A) 1100101和1100111 B) 10100011和01110111C) 1000101和1100011 D) 0110101和0110111
In a certain flower shop, which stocks four types of flowers, there are
as many violets as carnations, and
as many tulips as violets. If there are equal numbers of roses and tulips, what percent of the flowers in the shop are carnations
as many violets as carnations, and 
as many tulips as violets. If there are equal numbers of roses and tulips, what percent of the flowers in the shop are carnations