本课配套习题挑战模式1/5
单选题
难度系数:
1.下列算式正确的是()
A:3+(-2)+(+2)=1 |
B: 4+(-6)+3=(-6)+4+3 |
C:[5+(-2)]+4=(5+4)+2 |
D: |
一次做对,真牛!
+5奖励规则>
- 提示1:5rOo5oSP5Yqg5rOV5Lqk5o2i5b6L5ZKM5Yqg5rOV57uT5ZCI5b6L5L2/55So6KeE5YiZ
- 答案:Qg==
QS7plJnor6/jgILljp/lvI89M+OAgkIu5bqU55So5Lqk5o2i5b6L44CCQy7oi6XlupTnlKjnu5PlkIjlvovvvIzlupTkuLpbNSvvvIgtMu+8iV0rND3vvIg1KzTvvIktMuOAgkQu6Iul5bqU55So57uT5ZCI5b6L77yM5bqU5Li6PGltZyB3aWR0aD0yNDggaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvNzMvMjMvckJBQ0UxVElvV3ZDZ1l3WUFBQUR5TXdvcGFRMzAwLnBuZyI+
本课配套习题挑战模式5/5
单选题
难度系数:
5.已知有理数a满足-a+|a|>0,则()
A:a为正数 |
B: a为负数 |
C: a为非零有理数 |
D: a为非正有理数 |
一次做对,真牛!
+5奖励规则>
- 提示1:5LuO55u45Yqg57uT5p6c5aSn5LqOMO+8jOWFpeaJi+iAg+iZkQ==
- 答案:Qg==
6IulYe+8njDvvIzliJktYSt8YXw9MO+8m+iLpWE9MO+8jOWImS1hK3xhfD0w77yM5Y+q5pyJYe+8nDDvvIwtYSt8YXw9LWEtYT0tMmHvvJ4w77yM5omA5Lul5bqU6YCJQuOAgg==