颅裂和脊柱裂的临床表现：________、皮肤变薄、感染及________。
参考答案：局部肿块 神经功能障碍
You used to be really little fat, _______ you? [ ]
A. did
B. Didn't
C. didn't
D. Did
人工合成的高分子化合物不包括胶粘剂。（）
