挑战习题
1/5单选题
难度:

1.下列各式计算正确的是()
A (-3)×(-2)=-6
B (-4)×(-3)×(-5)=-60
C -8×7+(-2)×7+(-5)×0=0
D
提示1:
5pyJ55CG5pWw5LmY5rOV5rOV5YiZ
正确答案:Qg==
QS7ljp/lvI89Nu+8jEIu5q2j56Gu77yMQy7ljp/lvI89KC04LTIpw5c3PS03MO+8jEQu566A5L6/566X5rOV77yM5bqU55So5LmY5rOV5YiG6YWN5b6L77ya5Y6f5byPPTxpbWcgd2lkdGg9MjI3IGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzNFL0IwL3JCQUNKbFRJb3k3RGptYXFBQUFEcHVSWDJBSTQzOC5wbmciPu+8jOaVhemAiUI=