晶格取代作用
参考答案：
指在物质结构中某些原子被其它化合价不同的原子取代而晶体骨架保持不变。
Have you seen Jack recently? I wonder _____ with his classmates. [ ]
A. how is he getting along
B. what he is getting along
C. that he is getting along well
D. if he is getting along well
If you can convince the interviewer of your special qualifications, your chance of being accepted will be greatly enhanced.
A．appreciated
B．encouraged
C．frustrated
D．increased
