挑战习题
1/5单选题
难度:

1.下列物质的分类合理的是
A A
B B
C C
D D
提示1:
5rOo5oSP5LiA5rCn5YyW56Kz5LiN5piv6YW45oCn5rCn5YyW54mp44CC
正确答案:RA==
QeS4ree6r+eise+8iE5hPHN1Yj4yPC9zdWI+Q088c3ViPjM8L3N1Yj7vvInkuI3mmK/norHvvIzmmK/nm5DvvIzng6fnorHvvIhOYU9I77yJ5piv56Kx77yM5LiN5piv55uQ77yMQemUmeivr++8m0LkuK3kuIDmsKfljJbnorPkuI3mmK/phbjmgKfmsKfljJbnianvvIzmmK/kuI3miJDnm5DmsKfljJbnianvvIxC6ZSZ6K+v77ybQ+S4reawtOS4jeaYr+mFuOaAp+awp+WMlueJqe+8jEPplJnor6/vvJtE5q2j56Gu44CC