挑战习题
1/5单选题
难度:

1.在1、-2、-5.5、0、、−、3.14中,负数的个数为(  )
A 3个
B 4个
C 5个
D 6个
提示1:
IOagueaNrui0n+aVsOeahOaEj+S5ie+8jOWwj+S6jjDnmoTmlbDpg73mmK/otJ/mlbDvvIzlhbbkuK0tMu+8jC01LjXvvIwtPGltZyB3aWR0aD02IGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzAwLzM4L3JCQUNGRk5zYV9TVG9GNTRBQUFCSFp6Wk5zSTI1OS5wbmciPuWwj+S6jjAuIOaJgOS7peaciTPkuKrotJ/mlbAu
正确答案:QQ==
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