挑战习题
1/5单选题
难度:

1.1、给出下列各数:-3,0,+5,,+3.1,,2004,+2008.其中是负数的有()
A2个
B3个
C4个
D 5个
提示1:
5qC55o2u5q2j5pWw6LSf5pWw55qE5a6a5LmJ5Yik5pat
提示2:
5rOo5oSP56ym5Y+3
正确答案:Qg==
5qC55o2u6LSf5pWw55qE5a6a5LmJ5Y+v5b6X77ya77mjM+OAgTxpbWcgd2lkdGg9MjYgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvM0UvQUMvckJBQ0psVEluUmlDN1dNaEFBQUJZMWZlQ0M4MzM3LnBuZyI+44CBPGltZyB3aWR0aD0xOSBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8zRS9BQy9yQkFDSmxUSW5SaXhLdHA5QUFBQksxNnQ0THc2NjkucG5nIj7mmK/otJ/mlbDvvIzmiYDku6XmnIkz5Liq6LSf5pWw