荧光
参考答案：
吸光受激分子处在不同类型的电子激发态时所产生的光辐射现象.
地下连续墙有何优缺点优点？
When asked about my plan for the future, I hope to get a job on the local newspaper at first and ________work for "China Daily"．
A．regularly
B．frequently
C．gradually
D．eventually
