Given that Triangle implements Runnable， and： 
Which two statements， inserted independently at both lines 35 and 41， tend to allow both threads to temporarily pause and allow the other thread to execute？（）
- A、Thread.wait（）；
- B、Thread.join（）；
- C、Thread.yield（）；
- D、Thread.sleep（1）；
- E、Thread.notify（）；
正确答案:C,D
答案解析:有
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