碱金属一般以()形式存在于矿石中。
参考答案:硅酸盐
With everything______, the manager left for England to attend an important business meeting.
A.arranging
B.to be arranged
C.to arrange
D.arranged
下列哪项不属于神的物质基础是()。
A.精
B.气
C.肉
D.血
E.津液