A. Hardly had he B. Scarcely he had C. No sooner had he D. As soon as he had
A. 正确 B. 错误
A. 增色效应 B. 最大吸收波长发生转移 C. 失去对紫外线的吸收能力 D. 溶液黏度增加 E. 磷酸二酯键的断裂