什么叫食用合成色素？
参考答案：
食用天然色素是指以煤焦油为原料制成的。通称为煤焦色素或苯胺色素
行政合同是行政机关的一种行政行为，行政机关通过该行为希望实现( )。
A．自身利益
B．相对方的利益
C．公共利益
D．合同双方利益
Many players later failed drug test, ______ the race had to be rerun.
[ ]
A. now that
B. so that
C. as soon as
D. in order that
