A049Java API中支持线程的类或接口是() I.java.lang.Thread II.java.lang.Runnable III.java.lang.ThreadGroup IV.java.io.Serializable A. I, II, III B. I, II, IV C. I, II D. I, II, III, IV
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【单选题】The retired couple enjoy__________ photos.They always go out with their cameras.
【简答题】阅读理解。 It was an exciting moment for Shen Xue and Zhao Hongbo, a retired married couple from Harbin, China. It was also a great moment for China because it was the country's first gold medal in the pai...