钝器伤与锐器伤的鉴别
参考答案：
创的六个基本结构及毛发、骨折情况进行鉴别。
Li Ming speaks very good English _____ he were an English boy. [ ]
A. so that
B. even though
C. as though
D. now that
根毛是（）。
A、毛状的不定根
B、根表皮细胞分裂产生的突起
C、表皮毛
D、表皮细胞外壁突起伸长的结果
