几年举行一次大陆地震活动和地震预报国际学术讨论会（）。
A、8.0
B、9.0
C、10.0
D、11.0
参考答案：C
读图，四种天气系统中，能形成我国东南沿海夏秋季节台风天气的是
The company’s training plan was designed to help the employees to improve their work habits and ______.
A. proficiency B. sufficiency C. insufficiency D. efficiency
