电容三点式振荡器是自激振荡器的一种。由（）组成。
A.串联电容
B.电感回路
C.正反馈放大器
D.并联电容
参考答案：A, B, C
Film goes ___________ the camera. [ ]
A. in
B. on
C. to
Questions 6 to 10 are based on the following news.
A. Few people expect a breakthrough on reaching an international treaty. B. The toughest issues on climate change would remain unresolved. C. The United Nations negotiating process itself is at risk. D. The United States entered the talks in a p position.
