新时期最鲜明的特点是（）。
A.快速发展
B.改革开放
C.与时俱进
D.经济繁荣
参考答案：B
Encouraged by my science teacher, I set about my studies on developing my product, _____I hope I will succeed in applying for a patent（专利）.
A．with whom
B．to whom
C．through which
D．for which
避雷器有哪几种类型？
