沥青混凝土路面的粗矿料宜采用洁净、无风化、无杂质、干噪，具有足够强度的，耐磨的（）。
A、抗裂的
B、刚性的
C、碱性的
D、酸性的
参考答案：C
下列除哪项外，均是急性白血病热毒炽盛证的主症
A．烦躁不安
B．咽喉肿痛
C．壮热口渴
D．肢体困倦
E．口舌生疮
20.______ that caused him to serve dinner an hour later than usual.
A．It was we being late
B．It was our being late
C．It was we were too late
D．It was because we were late
