朝搴阰之木兰兮，（）。（屈原《离骚》）
参考答案：夕揽洲之宿莽
可以表示数学式 的C语言表达式是 ___(1)___。
The crowd is too noisy, but anyway I have to make myself ______ to them because the news is so important to them.
A．known
B．understood
C．heard
D．known
