A:dared hardly to whisper
B:hardly daring to whisper
C:dared not to whisper
D:not dared whisper
对一个非零自然数作如下操作:如果是偶数则除以2;如果是奇数则加1.如此进行直到变为1为止.那么经过三次操作能变为1的数为____ ;经过11次操作能变为1的非零自然数的个数为____
Simon always tells ________ stories to make us ________.
In our class there are 45 ________.( )