既能凉血止血，又能散瘀消痈的药物是
A．生地黄、牡丹皮B．赤芍、紫草C．金银花、连翘D．大蓟、小蓟E．侧柏叶、茜草
参考答案：D
People often have this belief ______ development is bad for the environment, but this does not have to be true.
A．that
B．which
C．where
D．how
化工常用的无机非金属材料和有机非金属材料主要有那些？
