鼻-鼻旁窦恶性肿瘤属T3期病变是因侵犯了()
A.面颊部皮肤
B.上颌窦后壁
C.眶底
D.前组筛窦
E.筛板
参考答案:A, B, C, D
原型立体构成时,所需布料可以()。
A、经纬丝绺互相垂直
B、经纬丝绺可以偏纱约1cm
C、任其自然
By the time we arrived at the railway station, the train _________. As a result, we missed the train.
A.left
B.is leaving
C.had left
D.leaves