在进行农业观光园规划时,景致是不能以绿色为主色调,因为绿色是与整个农林产业氛围最协调一致的色彩。()

A．even though these minor parties have very practical importance
B．even though these minor parties have some practical importance
C．even though these minor parties have very little practical importance
D．even though these minor parties have no practical importance at all