如果|a|=2.3，则a=______．
∵|a|=2.3，∴a=±2.3．
仿照例子，在括号里填上合适的词语，把话写得更具体些。
例：老乡摘下葡萄。
（热情好客）的老乡摘下（最甜）的葡萄。
葡萄挂在架子上。
( )的葡萄挂在( )的架子上。
葡萄种在梯田里。
( )的葡萄种在( )的梯田里。
Sam and Jessica are invited to a dance. If there are 7 men and 7women in total at the dance, and one woman and one man are chosen to lead the dance, what is the probability that Sam and Jessica will NOT be chosen to lead the dance
