模块结构图设计首先从______模块开始设计，经逐步细化，最后获得模块结构图。
参考答案：功能
眼睑最常见的恶性肿瘤为（）。
A.基底细胞癌
B.毛细血管瘤
C. * * 状瘤
D.角化棘皮病
E.睑板腺腺癌
If people _____ the importance of living a low-carbon life earlier, there _____ so many environmental
problems now. [ ]
A. realized; wouldn't be
B. had realized; wouldn't be
C. had realized; wouldn't have been
D. realized; wouldn't have been
