膨胀剂的用途：（）。
A、补偿收缩混凝土
B、填充用膨胀混凝土
C、灌浆用膨胀砂浆
D、自应力混凝土
参考答案：A, B, C, D
_________ Australia’s relatively small population, its outstanding performance in the Olympic Games was really amazing.
A．Having considered
B．Considered
C．Considering
D．To consider
卵巢恶性生殖细胞瘤中放射敏感肿瘤是（）。
A.卵巢内胚窦瘤
B.卵巢未成熟畸胎瘤
C.卵巢无性细胞瘤
D.卵巢混合性生殖细胞瘤
E.胚胎瘤
