颌面外伤中的“二次弹片”是指()
A.外伤时进入组织内的泥沙
B.牙齿上的牙结石
C.被打折的牙或脱位牙
D.再次受到弹片的打击
E.游离的软组织
参考答案:C
Bill Smith can play ____ soccer. His brother can play ____ violin,
but they often play ____ yo-yo together. [ ]
A. the, the, with
B. a, the, for
C. /, the, with
D. the, / , for
抗战以来,国民党取得第一次重大胜利的战役是()
A.平型关战役
B.淞沪会战
C.台儿庄战役
D.武汉会战