This means that, unless you say ________, no one can perform a piece written by you or make copies of it without your permission.

It is winter now and the weather is getting .

填入下面一段文字横线处的语句，衔接最恰当的一项是中国艺术中“风骨”的评品，源自对国人的感性生命及其精神风貌的识见。从魏晋开始，许多绘画作品尝试运用这个观念，一时蔚然成风。 。由此，“风骨”成了后人评判民族优秀文学作品的一个重要尺度。

266. At first he did not realize that hehad succeeded in making a computer that ran on solar power. “Realize” in the sentencemeans “___________”

Costs have been reduced ___20% over past year